The probability that a randomly chosen value from this normal population will be greater than 57 is approximately 0.0297, or 2.97%.
To find the probability that a randomly chosen value will be greater than 57 from a normal population with a mean (μ) of 40 and a standard deviation (σ) of 9, you will need to follow these steps:
1. Calculate the z-score:
The z-score represents the number of standard deviations a value is away from the mean.
To calculate the z-score, use the formula:
z = (X - μ) / σ, where X is the value in question (57 in this case).
2. In this case, z = (57 - 40) / 9 = 17 / 9 ≈ 1.89.
3. Look up the z-score in a standard normal distribution table (or use a calculator or software) to find the probability of obtaining a z-score less than 1.89.
The table value for a z-score of 1.89 is approximately 0.9703.
4. Since we want the probability that the value is greater than 57, we need to find the probability of obtaining a z-score greater than 1.89.
To do this, subtract the table value from 1:
1 - 0.9703 = 0.0297.
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Current Attempt in Progress
The compressive strength of concrete is normally distributed with μ = 2498 pslande σ = 52 psl. A random sample of 9 specimens collected. What is the standard error of the sample mean? Round your final answer to three decimal places tolat : 12345).
The standard error of the sample means is ___ psi.
The standard error of the sample means is 17.333 psi.
To find the standard error of the sample mean, we will use the following formula:
Standard Error (SE) = σ / √n
where σ is the population standard deviation, and n is the sample size. In your case, we have:
μ = 2498 psi (mean)
σ = 52 psi (standard deviation)
n = 9 (sample size)
Now, let's calculate the standard error:
SE = 52 / √9
SE = 52 / 3
SE = 17.333 psi
Rounding to three decimal places, we get:
The standard error of the sample means is 17.333 psi.
Note: The standard error (SE) is a measure of the variability or precision of a sample statistic, usually the mean, compared to the true population parameter.
It is the estimated standard deviation of the sampling distribution of a statistic, such as the mean, based on a finite sample size. The SE is calculated by dividing the standard deviation of the population by the square root of the sample size.
Standard deviation (SD) is a measure of the amount of variability or dispersion in a set of data.
It is the square root of the variance, which is calculated by taking the average of the squared differences between each data point and the mean of the dataset.
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Find the minimum or maximum value of y=x^2-6x+13
the answer is minimum value of (3,4)
A picture and surrounding border are fitted within a wooden frame as shown. The picture measures 8 1/2 inches by 11 inches. The base and height of the border and picture together each measure 2 inches more than the picture by itself. The area of the entire framed picture, including the border and the picture, is 216 square inches. Find the area of only the wooden frame, minus the border and the picture.
Regarding resolving the given issue, we have The area of the wooden frame alone, without the border and the image, is: 40.855 square inches are equal to (20.57 + 2) (10.5 + 2) - 215.985.
What is equation?A mathematical equation is a formula that connects two claims and uses the equals symbol (=) to denote equivalence. An equation in algebra is a mathematical statement that establishes the equivalence of two mathematical expressions. For instance, in the equation 3x + 5 = 14, the equal sign places a space between the variables 3x + 5 and 14. The relationship between the two sentences that are written on each side of a letter may be understood using a mathematical formula. The symbol and the single variable are frequently the same. as in, 2x - 4 equals 2, for instance.
Let x represent the image's height in inches on its own. In such case, the image's width is 8.5 inches.
The height of the border and picture together is x + 2 inches, and the width is 8.5 + 2 = 10.5 inches since their combined measurements are 2 inches more than the picture's individual proportions.
The framed image has a 216 square inch surface area, including the border and the image, thus we have:
Height and breadth are equal to 216 (x + 2) by 10.5 and 216 (x + 2) by 20.57 by 18.57.
Therefore, the picture's height alone is around 18.57 inches, while the border and picture as a whole measure 20.57 inches by 10.5 inches.
The full framed image's area, including the border and the image itself, is:
20.57 x 10.5 = 215.985 x 216 for height and breadth
The area of the image and the area of the border must be subtracted from the overall area of the framed picture in order to get the area of only the wooden frame.
The image measures 8.5 x 18.57 inches, or 158.145 square inches.
The distance between the picture's actual size and the border's size is the area of the border:
157.145 minus 215.985 equals 57.84 square inches.
The area of the wooden frame alone, without the border and the image, is:
40.855 square inches are equal to (20.57 + 2) (10.5 + 2) - 215.985.
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Three events occur with probabilities P (E1) = 0.33, P(E2) = 0.19, and P(E3) 0:43. If the aven B occurs, the probability becomes P(E1,B) = 0 28, P(B) - 0 25. Complete parts a through c. a. Calculate P(E1, and B) b. Compute P(E1, or B) c. Assume that E1, E2, and E3, are independent events. Calculate P(E1, and E2, and E3).
Substituting the given probabilities, we get:
P(E1 and E2 and E3) = 0.33 * 0.19 * 0.43
P(E1 and E2 and E3) = 0.0279 or approximately 2.79%.
a. To calculate P(E1 and B), we can use the formula: P(E1 and B) = P(B) * P(E1 | B), where P(E1 | B) represents the probability of E1 occurring given that B has occurred. We are given that P(B) = 0.25 and P(E1, B) = 0.28, so we can solve for P(E1 | B) as follows:
P(E1, B) = P(B) * P(E1 | B)
0.28 = 0.25 * P(E1 | B)
P(E1 | B) = 0.28/0.25
P(E1 | B) = 1.12
Since probabilities must be between 0 and 1, we can see that there is an error in the problem statement, as P(E1 | B) cannot be greater than 1. Therefore, we cannot calculate P(E1 and B) using the given information.
b. To compute P(E1 or B), we can use the formula: P(E1 or B) = P(E1) + P(B) - P(E1 and B), where P(E1 and B) is the probability of both E1 and B occurring at the same time. We are given that P(E1) = 0.33, P(B) = 0.25, and we cannot calculate P(E1 and B) using the given information. Therefore, we cannot calculate P(E1 or B) with the information provided.
c. If E1, E2, and E3 are independent events, then the probability of all three occurring together can be calculated using the formula: P(E1 and E2 and E3) = P(E1) * P(E2) * P(E3).
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(6 points) Consider the function p2 f(0) = 4x2 + 8 List the x values of the inflection points of f. If there are no inflection points, enter 'NONE'.
The x values of the inflection points of f(0) = 4x² + 8 are 'NONE'.
To find inflection points, we first need to find the second derivative of the function. The original function is f(x) = 4x² + 8. The first derivative, f'(x), is the derivative of 4x² + 8 with respect to x, which is 8x.
Now, find the second derivative, f''(x), by taking the derivative of 8x with respect to x, which is 8. Since the second derivative is a constant value (8) and does not change with x, there are no inflection points. Inflection points occur when the second derivative changes sign, but in this case, it remains constant.
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A student is speeding down Route 11 in his fancy red Porsche when his radar system warns him of an obstacle 322 feet ahead. He immediately applies the brakes, starts to slow down, and spots a skunk in the road directly ahead of him. The "black box" in the Porsche records the car's speed every two seconds, producing the following table. The speed decreases throughout the 10 seconds it takes to stop, although not necessarily at a constant rate. (a) What is your best estimate of the total distance the student's car traveled before coming to rest? Estimate the integral using the average of the left-and right-hand sums. Round your answer to the nearest integer. The total distance the student's car traveled is about ____. ft
The best estimate of the total distance the student's car traveled before coming to rest is about 840 feet.
To estimate the total distance the student's car traveled before coming to rest, we will use the left and right Riemann sums to approximate the integral of the velocity function over the interval [0, 20]. The velocity function is given by the data in the table:
t (seconds) v (ft/s)
----------------------
0 96
2 88
4 76
6 62
8 46
10 28
12 10
14 0
16 0
18 0
20 0
To use the left Riemann sum, we will use the velocity values from the first column of the table, and for the right Riemann sum, we will use the velocity values from the second column of the table.
The width of each subinterval is 2 seconds, since the data is given at 2-second intervals.
Using the left Riemann sum, we get:
distance = sum of (velocity x time interval)
= 96(2) + 88(2) + 76(2) + 62(2) + 46(2) + 28(2) + 10(2) + 0(2) + 0(2) + 0(2)
= 920
Using the right Riemann sum, we get:
Taking the average of these two estimates, we get:
distance ≈ (920 + 760)/2
≈ 840
Rounding to the nearest integer, we get the final estimate:
distance ≈ 840 feet
Therefore, the best estimate of the total distance the student's car traveled before coming to rest is about 840 feet.
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Determine the area of the largestrectangle that can be inscribed in a circle of radius 1.
The diameter of the circle is 2, which means the length and width of the rectangle can be at most 2. This means the length and width of the rectangle are each half the diameter, or 1. Therefore, the area of the largest rectangle that can be inscribed in the circle of radius 1 is 1 x 1 = 1.
The area of the largest rectangle can be inscribed in a circle of radius 1.
Step 1: Understand the problem
We are asked to find the area of the largest rectangle that can fit inside a circle with a radius of 1.
Step 2: Visualize the problem
The largest rectangle that can be inscribed in a circle is a square. This is because all corners of the square will touch the circle, and any other shape of the rectangle will have less area.
Step 3: Calculate the diagonal of the square
The diagonal of the square is equal to the diameter of the circle. Since the radius of the circle is 1, the diameter is 2 (radius * 2).
Step 4: Calculate the side length of the square
Since a square has all equal sides, we can use the Pythagorean theorem to find the side length (let's call it "s") of the square. In a square, the diagonal is equal to the square root of the sum of the squares of the sides.
Diagonal = √(s² + s²) = √(2 * s²)
2 = √(2 * s²)
Square both sides: 4 = 2 * s²
Divide by 2: s² = 2
Take the square root: s = √2
Step 5: Calculate the area of the rectangle (square)
Area = side * side
Area = (√2) * (√2)
Area = 2
The area of the largest rectangle that can be inscribed in a circle of radius 1 is 2 square units.
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A population of Australian Koala bears has a mean height of 20 inches and a standard deviation of 4 inches. You plan to choose a sample of 64 bears at random. What is the probability of a sample mean between 20 and 21.
The probability of a sample mean between 20 and 21 is approximately 0.4772 or 47.72%.
To solve this problem, we need to use the central limit theorem, which tells us that the distribution of sample means will be approximately normal, with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
In this case, the population mean is 20 inches and the population standard deviation is 4 inches. We plan to choose a sample of 64 bears at random, so the standard deviation of the sample mean will be:
standard deviation of the sample mean = 4 / √(64) = 0.5
To find the probability of a sample mean between 20 and 21, we need to calculate the z-scores for these values:
z-score for 20 = (20 - 20) / 0.5 = 0
z-score for 21 = (21 - 20) / 0.5 = 2
We can use a standard normal distribution table or calculator to find the area under the curve between these two z-scores. The area between z = 0 and z = 2 is approximately 0.4772.
Therefore, the probability of a sample mean between 20 and 21 is approximately 0.4772 or 47.72%.
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Plot these numbers on the number line: 8.NS.A (more exact = higher score)
√2, √5. √8, √9. √15,√√22
0
1
2
3
5
Answer:
see image
Step-by-step explanation:
Use a calculator to change each radicals to a decimal. (These are all rounded)
sqrt2 = 1.4
sqrt5 = 2.2
sqrt8 = 2.8
sqrt9 = 3
sqrt15 = 3.9
sqrt22 = 4.7
Then you can put them on the numberline. Remember, exactly half way between the numbers on the numberline is .5
For any natural number n, it is true that in=1,i,â1, depending on the remainder of n when divided by 4.
We can conclude that for any natural number n,[tex]n^2[/tex]= 1 (mod 4) depending on the remainder of n when divided by 4.
The statement "For any natural number n, it is true that in=1,i,â1, depending on the remainder of n when divided by 4" is not true.
In fact, the statement is not well-defined because it is unclear what "in" refers to.
However, if the statement is intended to be "For any natural number n, it is true that [tex]n^2[/tex]=1 (mod 4) depending on the remainder of n when divided by 4," then this statement is true.
To see why, note that any natural number can be written as 4k, 4k+1, 4k+2, or 4k+3 for some integer k.
If n = 4k, then [tex]n^2 = (4k)^2 = 16k^2[/tex], which is divisible by 4 and hence is congruent to 0 (mod 4). Therefore, [tex]n^2[/tex] = 1 (mod 4).
If n = 4k + 1, then [tex]n^2 = (4k + 1)^2 = 16k^2 + 8k + 1 = 4(4k^2 + 2k) + 1[/tex], which is congruent to 1 (mod 4). Therefore, [tex]n^2[/tex] = 1 (mod 4).
If n = 4k + 2, then [tex]n^2 = (4k + 2)^2 = 16k^2 + 16k + 4 = 4(4k^2 + 4k + 1)[/tex], which is congruent to 0 (mod 4). Therefore, n^2 = 0 (mod 4), which is not equal to 1 (mod 4).
If n = 4k + 3, then[tex]n^2 = (4k + 3)^2 = 16k^2 + 24k + 9 = 4(4k^2 + 6k + 2)[/tex] + 1, which is congruent to 1 (mod 4). Therefore, [tex]n^2 = 1[/tex] (mod 4).
Therefore, we can conclude that for any natural number n,[tex]n^2 =[/tex]1 (mod 4) depending on the remainder of n when divided by 4.
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(A) Find the radius of convergence of the power series 23 26 29 y=1- + 3.2 + (6.5) · (32) (9.8) · (6.5) · (3 · 2) Remark: The absolute value of the ratio of terms has a very simple and obvious expression and the ratio test indicator can be easily computed from that. (B) Show that the function so defined satisfies the differential equation y" + xy = 0.
The radius of convergence of the power series is [tex]\frac{|(3.2)(6.5)(32)|}{(23)(26)(9.8)(6.5)(3)(2)} = |0.4|[/tex]
The radius of convergence of the power series, we can use the ratio test.
The ratio of consecutive terms in the series is:
|(3.2)(6.5)(32) / (23)(26)(9.8)(6.5)(3)(2)| = |0.4|
Since the absolute value of this ratio is less than 1, the series converges absolutely.
Therefore, the radius of convergence is infinite.
(B) To show that the function defined by the power series satisfies the differential equation y" + xy = 0, we need to differentiate the power series term by term twice.
Differentiating once, we get:
y' = 3.2 + 2(6.5)(32)x + 3(9.8)(6.5)(32)x^2 + ...
Differentiating again, we get:
y" = 2(6.5)(32) + 2(3)(9.8)(6.5)(32)x + ...
Substituting these into the differential equation, we get:
y" + xy = 2(6.5)(32) + 2(3)(9.8)(6.5)(32)x + ... + x(3.2 + 2(6.5)(32)x + 3(9.8)(6.5)(32)x2 + ...)
= 2(6.5)(32) + (3.2)x + 2(6.5)(32)x2 + 3(9.8)(6.5)(32)x3 + ...
We can see that this expression is equal to 0, which means that the function defined by the power series satisfies the differential equation y" + xy = 0.
= [tex]\frac{|(3.2)(6.5)(32)|}{(23)(26)(9.8)(6.5)(3)(2)} = |0.4|[/tex]
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One can set up a spreadsheet to compute the iterations of Euler's method for approximating solutions to second-order ODEs. true or false
The statement "one can set up a spreadsheet to compute the iterations of Euler's method for approximating solutions to second-order ODEs" is true because this method provides a numerical solution to differential equations by iteratively updating the variables based on the given differential equation.
A spreadsheet can be used to organize and calculate these iterations, making it easier to approximate the solutions to second-order ODEs.
To set up a spreadsheet for Euler's method to approximate solutions to a second-order ODE, one would need to follow these steps:
Define the ODE and its initial conditions (i.e., the values of the dependent variable and its derivative at some starting point).Choose a step size (i.e., the size of the intervals between each successive approximation).Use Euler's method to compute the next approximation of the solution at each step, using the previous approximation and the derivative of the ODE at that point.Store each approximation in a separate cell of the spreadsheet.Repeat the process until the desired number of approximations has been computed.The spreadsheet would allow you to easily perform the iterative calculations required by Euler's method, and to visualize the behavior of the solution over time.
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5 7 Find the general antiderivative of the function f(x) = 4 4 v(5x-3) - 5/2 e^3x + 7/x^2
The general antiderivative of the given function is [tex]\frac{2}{15}\left(5x-3\right)^{\frac{3}{2}}-\frac{5}{9}e^{3x}-\frac{7}{x}+C[/tex]
Given that a function f(x) = [tex]\sqrt{5x-3}-\frac{5}{3}e^{3x}\:+\:\frac{7}{x^2}[/tex]
We need to find its antiderivative,
[tex]\int (\sqrt{5x-3}-\frac{5}{3}e^{3x}\:+\:\frac{7}{x^2})dx[/tex]
[tex]=\int \sqrt{5x-3}dx-\int \frac{5}{3}e^{3x}dx+\int \frac{7}{x^2}dx[/tex]
[tex]=\frac{2}{15}\left(5x-3\right)^{\frac{3}{2}}-\frac{5}{9}e^{3x}-\frac{7}{x}[/tex]
[tex]=\frac{2}{15}\left(5x-3\right)^{\frac{3}{2}}-\frac{5}{9}e^{3x}-\frac{7}{x}+C[/tex]
Hence, the general antiderivative of the given function is [tex]\frac{2}{15}\left(5x-3\right)^{\frac{3}{2}}-\frac{5}{9}e^{3x}-\frac{7}{x}+C[/tex]
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Consider the line 4x- 8y = 5.
What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?
The slope of a line perpendicular to the given line is -2.
The slope of a line parallel to the given line is 1/2.
To find the slopes of lines perpendicular and parallel to the given line, we first need to rewrite the equation in slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept.
Given equation: 4x - 8y = 5
Rearrange the equation to solve for y:
-8y = -4x + 5
y = (1/2)x - (5/8)
Now that the equation is in slope-intercept form, we can identify the slope of the given line:
m1 = 1/2
For a line to be parallel to the given line, it must have the same slope. So, the slope of a line parallel to this line is:
m_parallel = 1/2
For a line to be perpendicular to the given line, its slope must be the negative reciprocal of the slope of the given line. So, the slope of a line perpendicular to this line is:
m_perpendicular = -1/m1 = -1/(1/2) = -2
Suppose that X has a discrete uniform distribution on the integers 1 to 15. Find 3V(X).
X having a discrete uniform distribution on the integers 1 to 15 have 3V(X) = 168.
How we find 3V(X).?The discrete uniform distribution on the integers 1 to 15 means that each of the 15 integers is equally likely to be chosen as the value of X.
The mean or expected value of X is given by the formula:
E(X) = (1+15)/2 = 8
Therefore, the variance of X is given by the formula:
Var(X) = (15^2 - 1)/12 = 56
The standard deviation of X is the square root of the variance:
SD(X) = sqrt(Var(X)) = sqrt(56) = 2sqrt(14)
Finally, we can calculate 3V(X) as:
3V(X) = 3 x Var(X) = 3 x 56 = 168
Therefore, 3V(X) = 168.
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Calculate L4 for f(x)=6cos(x/2) over [2π/4,2π/2][2π/4,2π/2].
The fourth derivative of f(x) over the interval [2π/4,2π/2] is -3/8.
The given function is f(x) = 6cos(x/2) over the interval [2π/4,2π/2]. To find the fourth derivative of this function, we need to apply the chain rule and the product rule repeatedly.
First, let's find the first derivative of f(x):
f'(x) = -3sin(x/2)
Next, let's find the second derivative of f(x):
f''(x) = -3/2cos(x/2)
Now, let's find the third derivative of f(x):
f'''(x) = 3/4sin(x/2)
Finally, let's find the fourth derivative of f(x):
f''''(x) = 3/8cos(x/2)
Now that we have the fourth derivative of the function, we can evaluate it over the interval [2π/4,2π/2] to get the value of L4. To do this, we simply substitute the upper limit of the interval (2π/2) and the lower limit of the interval (2π/4) into the fourth derivative expression and subtract the results. This gives us:
L4 = f''''(2π/2) - f''''(2π/4)
= (3/8)cos(π) - (3/8)cos(π/2)
= -(3/8)
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Could someone answer this please
Answer:
8
Step-by-step explanation:
Instant Dinner comes in packages with weights that are normally distributed, with a standard deviation of -.5oz. Suppose 15.9% of the dinners weigh more than 12.1 oz. a) Determine the z-score for the weight of 12.1 oz. (round you answer to two decimal places.) b) What is the mean eight (in oz)? (Round your answer to one decimal place.)
a)To Determine the z-score for the weight of 12.1 oz is 1.04. b)The mean eight (in oz) is 12.6 oz.
a) To determine the z-score for the weight of 12.1 oz, we can use the formula:
z = (X - μ) / σ
where z is the z-score, X is the value (12.1 oz), μ is the mean weight, and σ is the standard deviation (-0.5 oz). We know that 15.9% of dinners weigh more than 12.1 oz, so we can look up the corresponding z-score in a z-table, which is approximately 1.04.
b) To find the mean weight (μ), we can rearrange the formula above:
μ = X - (z * σ)
Substituting the values we have:
μ = 12.1 - (1.04 * -0.5)
μ = 12.1 + 0.52
μ = 12.62
So, the mean weight is approximately 12.6 oz when rounded to one decimal place.
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There are 16 fruits in a basket. Of the 16 fruits, 2/4 are apples, 1/4 are bananas, and 1/4 are oranges.
Which statement describes the fruits in the basket?
A. There are 8 bananas in the basket.
B. There are 8 of each fruit in the basket.
C. There are 8 oranges in the basket.
D. There are 8 apples in basket.
Answer:
There are 8 apples in basket
Determine whether the sequence is divergent or convergent. If it is convergent, evaluate its limit. If it diverges to infinity, state your answer as "oo" (without the quotation marks). If it diverges to negative infinity, state your answer as "-oo". If it diverges without being infinity or negative infinity, state your answer as "DNE".n→[infinity]lim2n+8n7
The given sequence is: lim (n→∞) (2n + 8) / n^7
To determine if this sequence is convergent or divergent, we can analyze its behavior as n approaches infinity. We can do this by dividing both the numerator and the denominator by the highest power of n in the denominator, in this case, n^7: lim (n→∞) [(2n/n^7) + (8/n^7)] / (n^7/n^7)
This simplifies to:
lim (n→∞) (2/n^6) + (8/n^7)
As n approaches infinity, both terms in the expression approach 0, since the denominator grows faster than the numerator:
lim (n→∞) (2/n^6) = 0
lim (n→∞) (8/n^7) = 0
So, the limit of the sequence is:
0 + 0 = 0
The sequence is convergent, and its limit is 0.
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Question is in picture
The period of the sinusoidal wave is determined as π.
option C.
What is the period of a sinusoidal wave?The period of a sinusoidal wave refers to the length of time it takes for the wave to complete one full cycle. In other words, it is the time it takes for the wave to repeat its pattern.
The period is typically denoted by the symbol "T" and is measured in units of time, such as seconds (s).
Mathematically, the period of a sinusoidal wave can be defined as the reciprocal of its frequency.
T = 1/f
Where;
T is the period in seconds (s) and f is the frequency in hertz (Hz)From the given graph, a complete cycle is made at π, so this is the period of the wave.
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Assuming you have data for a variable with 2,000 values, using the 2^k > n guideline, what is the least number of groups that should be used in developing a grouped data frequency distribution? a.) 9 b.) 11 c.) 12 d.) 13
Based on the frequency distribution, the above question's response is 11. The answer is option (B).
What is Frequency distribution?The number of observations that fall into each category can be counted using a frequency distribution, which divides the data into intervals or categories. By displaying how frequently each category occurs, it summarises the data.
Using the [tex]2^k > n[/tex] rule, where n is the total number of data points, is as follows: [tex]2^k > 2000[/tex]
If we take the logarithm base 2 of both sides, we obtain:
k > log₂(2000)
k > 10.965784
Since k must be an integer, we can round up to the next integer to get:
k = 11
If we take the logarithm base 2 of both sides, we obtain:
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Please help ASAP! Thank you!
A rectangular prism is filled with 16 cubes. Each cube is a 1/2 inch cube. What is the volume of the rectangular prism?
A. 2 in³
B. 8 in³
C. 16 in³
D. 32 in³
The volume of the rectangular prism is 8 in³.
What are the number of cubes in a rectangular prism?
Since the rectangular prism is filled with 16 cubes, we know that the total volume of the cubes is:
[tex]16 \: cubes × ( \frac{1}{2} inch) ^{3} /cube = 16 × ( \frac{1}{8} ) in ^{3} /cube = 2 in^{3} [/tex]
Since each cube has a volume of 1/2 inch cubed, the length, width, and height of the rectangular prism are all equal to 4 cubes or 2 inches, as 4 cubes × (1/2 inch)/cube = 2 inches. Therefore, the volume of the rectangular prism is:
[tex]Volume = Length × Width × Height = 2 \: inches × 2 \: inches × 2 \: inches = 8 \: cubic \: inches[/tex]
Therefore, the answer is (B) 8 in³.
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Answer:
B
Step-by-step explanation:
I took the test
What does orthogonal mean, and what does the dot product of two orthogonal vectors equal?
Answer:
Perpendicular, 90 degrees
Step-by-step explanation:
Orthogonal means that the two vectors are Perpendicular. Meaning they form a [tex]90[/tex]° angle. The dot product of two Orthogonal vectors equals 0.
let there be 2 vectors u and v
If the two vectors are orthogonal, then the following must be true:
u·v=0
AND
the angle between the two vectors is a right angle, or 90°
Callie thinks of a number. She adds 6 to the number, multiplied the result by 2, and then subtracts 4. The number she ends up with is 46. what number did callie start with? if you work backward to solve this problem what do you do first
a. divide 42 by 2
b. subtract 4 from 46
c. subtract 6 from 46
d. add 4 to 46
According to the information, the answer is (c) subtract 6 from 46, which is the inverse operation of adding 6 to the original number.
How to find the correct option?If we work backward to solve this problem, we need to undo the operations that Callie performed on the original number. The last operation Callie performed was to subtract 4 from the result of multiplying the original number by 2 and adding 6. So, the first step in working backward is to add 4 to 46:
46 + 4 = 50Now, we need to undo the multiplication by 2 and the addition of 6. To undo multiplication by 2, we divide by 2:
50 ÷ 2 = 25To undo the addition of 6, we subtract 6:
25 - 6 = 19Therefore, the number Callie started with was 19.
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Here, ∠TMN is an exterior angle of △MNP. If m∠TMN is 168°, what is m∠P?
A) 62°
B) 73°
C) 80°
D) 88°
Answer:
B) 73°
Step-by-step explanation:
m∠NMP = 180 -168 = 12
Sum of interior angles of ΔNMP = 180
m∠P = 180 - 95 - 12 = 73
the diagram shows a sketch of the graph of y=ax to the power 2+bx+c find the values of a b and c
The coefficients of the quadratic equation are a = 9, b = 25.5, and c = 30. Therefore, the equation of the parabola is y = 9x² + 25.5x + 30.
Describe Parabola?A parabola is a U-shaped curve that is formed by the graph of a quadratic function. It is a type of conic section, along with the circle, ellipse, and hyperbola, that is formed by the intersection of a plane and a cone.
In algebraic terms, the general equation of a parabola is y = ax² + bx + c, where a, b, and c are constants that determine the shape, position, and orientation of the parabola. The sign of the coefficient a determines whether the parabola opens upwards (if a > 0) or downwards (if a < 0).
We are given three coordinates on the graph of the parabola, which we can use to form a system of three equations in three variables to solve for the coefficients a, b, and c.
Using the first coordinate (0,30), we have:
30 = a(0)² + b(0) + c
Simplifying, we get:
c = 30
Using the second coordinate (-2,0), we have:
0 = a(-2)² + b(-2) + 30
Simplifying, we get:
4a - 2b + 15 = 0
Using the third coordinate (-5,0), we have:
0 = a(-5)² + b(-5) + 30
Simplifying, we get:
25a - 5b + 30 = 0
Now we have a system of three equations in three variables:
c = 30
4a - 2b + 15 = 0
25a - 5b + 30 = 0
Using the first equation, we can substitute c = 30 into the other two equations to get:
4a - 2b = -15
25a - 5b = -30
Now we can solve for a and b using any method of solving systems of linear equations. One way is to multiply the first equation by 5 to get:
20a - 10b = -75
Subtracting the second equation from this, we get:
-5a = -45
Solving for a, we get:
a = 9
Substituting this back into one of the earlier equations, we can solve for b:
4(9) - 2b = -15
Simplifying, we get:
-2b = -51
Solving for b, we get:
b = 25.5
So the coefficients of the quadratic equation are a = 9, b = 25.5, and c = 30. Therefore, the equation of the parabola is:
y = 9x² + 25.5x + 30
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The complete question is:
Cuál es la pendiente de la recta que pasa por los puntos (−3/2,−1/2) , (5/3,−4)
Answer:
Step-by-step explanation
the wander to this question is -1/2 , (3-4(
14. int (8/(x^2-4)) dx =
Therefore, we can rewrite the integral as [tex]int(-2/(x-2) + 2/(x+2)) dx[/tex]
We can now integrate each term separately:
[tex]int(-2/(x-2)) dx = -2 ln|x-2| + C1[/tex]
[tex]int(2/(x+2)) dx = 2 ln|x+2| + C2[/tex]
where C1 and C2 are constants of integration.
We can start by factoring the denominator of the fraction, which is [tex]x^2-4[/tex]. This can be written as [tex](x-2)(x+2)[/tex]. Therefore, we can rewrite the integral as:
[tex]int(8/[(x-2)(x+2)]) dx[/tex]
We can then use partial fraction decomposition to simplify the integral. We want to find constants A and B such that:
[tex]8/[(x-2)(x+2)] = A/(x-2) + B/(x+2)[/tex]
Multiplying both sides by[tex](x-2)(x+2)[/tex], we get:
[tex]8 = A(x+2) + B(x-2)[/tex]
We can solve for A and B by setting x equal to -2 and 2, respectively. This gives us:
[tex]A = -2[/tex]
[tex]B = 2[/tex]
Therefore, we can rewrite the integral as:
[tex]int(-2/(x-2) + 2/(x+2)) dx[/tex]
We can now integrate each term separately:
[tex]int(-2/(x-2)) dx = -2 ln|x-2| + C1[/tex]
[tex]int(2/(x+2)) dx = 2 ln|x+2| + C2[/tex]
where C1 and C2 are constants of integration.
Putting it all together, the final solution is:
[tex]int(8/[(x-2)(x+2)]) dx = -2 ln|x-2| + 2 ln|x+2| + C[/tex]
where C = C1 + C2 is a constant of integration.
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Pythagorean theorem answer quick please
Answer:
6.25ft!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
