What is -3/5 multiplied by 4/7?
Pls show answer with step by step answers explained pls

Answer:

X is equal to 15

Step-by-step explanation:

Vertical angles are equal to each other so just make the two equal to each other and solve, If you need to find what each angle is just substitute x with 15

Answer:

2√73 I believe

Step-by-step explanation:

Input x with 3

2(3) = 6

5(3) + 1 = 16

16 squared is 256

6 squared is 36

A square plus B squared is C squared

square root of 292

The statistical analysis indicates a significant decrease in the average price of homes based on the given data. The test statistic of -2.5 is lower than the critical value, and the p-value is approximately 0.0062, supporting the conclusion of a significant decrease.

a. The null hypothesis (H0) assumes no significant decrease in the average price of homes, while the alternative hypothesis (Ha) assumes a significant decrease.

b. To determine the critical value, we consider a one-tailed test at a 5% level of significance. Looking up the critical value in the z-table for a one-tailed test, we find it to be -1.645.

c. The test statistic is calculated using the formula z = (sample mean - population mean) / (population standard deviation / sqrt(sample size)). Substituting the given values, we get z = (-10,000) / (36,000 / sqrt(81)) = -2.5.

d. Since the test statistic (-2.5) is less than the critical value (-1.645), we reject the null hypothesis. This indicates that there is evidence of a significant decrease in the average price of homes.

e. The p-value represents the probability of observing a test statistic as extreme as -2.5 or more extreme, assuming the null hypothesis is true. By looking up the p-value corresponding to a z-score of -2.5 in the z-table, we find it to be approximately 0.0062. This indicates strong evidence against the null hypothesis, further supporting the conclusion of a significant decrease in the average price of homes.

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Answer:

25.5 / 3 = 8.5

8.5 times more student prefer basketball over soccer

Step-by-step explanation:

Answer:

C: Half the people surveyed liked baseball or football

Step-by-step explanation:

25% + 25% = 50% which is 1/2 of the surveyed population

Answer:

the radius is 10 since 10 plus ten is 20

Answer:

49

Step-by-step explanation:

7^2 mean 7x7 which is 49

Answer: 64/81=8/9 is that what you trying to say. O and the answer is False

Step-by-step explanation: Hope this help :D

Answer:

the correct one would be quadrant 3

Step-by-step explanation:

Answer:

4. H

5. A

6. H

Step-by-step explanation:

For 4

Supplementary angles have a sum of 180

so 3x + 96 = 180

now we just use basic algebra to solve for x

step 1 subtract 96 from each side

180 - 96 = 84

now we have 84=3x

step 2 divide each side by 3

3x/3=x

84/3=28

we're left with x = 28

so the answer to #4 is H

For 5

Remember the sum of the angles in a triangle is 180

So we can calculate the missing angle by subtract the given angles (90 and 66 in this case) from 180 NOTE: ( the 90 came from the little square at the bottom right of the triangle. This square indicates that the angle is a right angle and a right angle has a measure of 90 degrees)

so x = 180 - 90 - 66

180 - 90 = 90

90 - 66 = 24

so we can conclude that x = 24 and the answer is A

For 6

Angle 2 and angle 4 are vertical angles

If you didn't know vertical angles are congruent

SO if one angle equal 120 degrees the other angle also equal 120 degree therefore the answer to number 6 is H

Answer:

6 units

Step-by-step explanation:

Answer:

6 units (B)

Step-by-step explanation:

8 - 2 = 6

When two four-sided dice are rolled, it creates a total of 16 possible outcomes. Because there are four numbers on each die, there are four possible outcomes on each die.  

To make a tree diagram for this situation, we begin with the first die rolled and the second die rolled. In the next level of the tree diagram, we list all of the possible outcomes.

The tree diagram is as follows:2. Only the pairs of numbers that contain different numbers are listed below:{(1, 2), (1, 3), (1, 4), (2, 1), (2, 3), (2, 4), (3, 1), (3, 2), (3, 4), (4, 1), (4, 2), (4, 3)}.There are 12 pairs of numbers that include different numbers.

Users can visualize the probabilities and possible outcomes of a situation using a tree diagram. Tree diagrams, which are also known as decision trees, are particularly useful for plotting the outcomes of dependent events, in which a change in one component has a significant impact on the outcome as a whole.

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Answer:

A = -2.3

Step-by-step explanation:

Answer:

The two coordinates should be (6, 3) and (10, 4).

Step-by-step explanation:

rise / run

y-value of the 2nd coordinate = 3 + 1 = 4

x-value of the 2nd coordinate = 6 + 4 = 10

The two coordinates should be (6, 3) and (10, 4).

A) The approximation of the definite integral ∫₀³ (2x - 1) dx using a right-endpoint approximation with four subintervals is 8.25.

B) The total area between f(x) = 2x and the x-axis over the interval [-5, 5] is 0.

C) The approximation of the definite integral ∫₋₂² (1/(x^2 + 1)) dx using a right-endpoint approximation with four subintervals is approximately 2.2

D) The derivative of s(x) is 0, which means the function s(x) is constant; s'(5) is also equal to 0.

A) To evaluate the definite integral ∫₀³ (2x - 1) dx using a right-endpoint approximation, we divide the interval [0, 3] into subintervals and approximate the area under the curve using rectangles. Let's use four subintervals:

Δx = (3 - 0) / 4 = 0.75

The right endpoints of the subintervals are: 0.75, 1.5, 2.25, 3.0

For each subinterval, we evaluate the function at the right endpoint and multiply it by the width Δx:

f(0.75) = 2(0.75) - 1 = 1.5 - 1 = 0.5

f(1.5) = 2(1.5) - 1 = 3 - 1 = 2

f(2.25) = 2(2.25) - 1 = 4.5 - 1 = 3.5

f(3.0) = 2(3.0) - 1 = 6 - 1 = 5

The Riemann sum is the sum of these areas:

R4 = Δx * [f(0.75) + f(1.5) + f(2.25) + f(3.0)]

= 0.75 * [0.5 + 2 + 3.5 + 5]

= 0.75 * 11

= 8.25

Therefore, the approximation of the definite integral ∫₀³ (2x - 1) dx using a right-endpoint approximation with four subintervals is 8.25.

B) The total area between the function f(x) = 2x and the x-axis over the interval [-5, 5] can be found by evaluating the definite integral ∫₋₅⁵ (2x) dx.

Since the function f(x) = 2x is a linear function, the area between the function and the x-axis is the area of a trapezoid. The base of the trapezoid is the interval [-5, 5], and the height is the maximum value of the function within that interval.

The maximum value of the function f(x) = 2x occurs at x = 5, where f(5) = 2(5) = 10.

The area of the trapezoid is given by the formula: Area = (base1 + base2) * height / 2.

In this case, base1 = -5 and base2 = 5, and the height = 10.

Area = (base1 + base2) * height / 2

= (-5 + 5) * 10 / 2

= 0

Therefore, the total area between f(x) = 2x and the x-axis over the interval [-5, 5] is 0.

C) To calculate R4 for the function g(x) = 1/(x^2 + 1) over the interval [-2, 2], we'll use a right-endpoint approximation with four subintervals.

Δx = (2 - (-2)) / 4 = 1

The right endpoints of the subintervals are: -1, 0, 1, 2

For each subinterval, we evaluate the function at the right endpoint and multiply it by the width Δx:

g(-1) = 1/((-1)² + 1) = 1/(1 + 1)

g(-1) = 1/(1 + 1) = 1/2

g(0) = 1/(0² + 1) = 1/1 = 1

g(1) = 1/(1² + 1) = 1/2

g(2) = 1/(2² + 1) = 1/5

The Riemann sum is the sum of these areas:

R4 = Δx * [g(-1) + g(0) + g(1) + g(2)]

= 1 * [1/2 + 1 + 1/2 + 1/5]

= 1 * [5/10 + 10/10 + 5/10 + 2/10]

= 1 * [22/10]

= 22/10

= 2.2

Therefore, the approximation of the definite integral ∫₋₂² (1/(x^2 + 1)) dx using a right-endpoint approximation with four subintervals is approximately 2.2.

D) To determine s'(5) for the function s(x) = 9(6x)/(x³), we need to find the derivative of s(x) with respect to x and evaluate it at x = 5.

Let's first find the derivative of s(x):

s(x) = 9(6x)/(x³)

Using the quotient rule to differentiate s(x), we have:

s'(x) = [9(6)(x³) - (9)(6x)(3x²)] / (x³)²

= [54x³ - 54x³] / x⁶

= 0 / x⁶

= 0

Therefore, The derivative of s(x) is 0, which means the function s(x) is constant; s'(5) is also equal to 0.

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Answer: 1/2(16p+8)(p+2)

Explanation: There is a lot to do, but basically you must simplify the equation and then multiply by 4 on both sides

Answer:

20

Step-by-step explanation:

-10-5x(-6)

-10+30

20

The cross product of the current vector (1 = 2i + 3j – 4k) and the magnetic field vector (B = 3i - 2j + 6k) is obtained by calculating the determinant of a 3x3 matrix formed by the coefficients of i, j, and k. The resulting cross product is 26i + 18j + 13k.

To find the cross product (I x B), we can calculate the determinant of the following matrix:

|i j k |

|2 3 -4 |

|3 -2 6 |

Expanding the determinant, we have:

(i * (3 * 6 - (-2) * (-4))) - (j * (2 * 6 - 3 * (-4))) + (k * (2 * (-2) - 3 * 3))

Simplifying the expression, we get:

(26i) + (18j) + (13k)

Therefore, the cross product of the current vector (1 = 2i + 3j – 4k) and the magnetic field vector (B = 3i - 2j + 6k) is 26i + 18j + 13k. This cross product represents the force on the conductor within the electric motor housing. The resulting force has components in the i, j, and k directions, indicating both the magnitude and direction of the force acting on the conductor.

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After inspecting the expression and comparing it with the standard equation of the parabola, the location of the vertex is (x, y) = (- 2, 7). (Correct choice: D) #SPJ5

The vertex is the bound point that characterizes parabolas and which can be a maximum or a minimum but never both. As we know the standard equation of the parabola, we can determine the location of the vertex, whose coordinates are (x, y) = (h, k), by just interpretating the equation, whose form is:

y - k = a · (x - h)²     (1)

After inspecting the expression and comparing it with the standard equation of the parabola, the location of the vertex is (x, y) = (- 2, 7). (Correct choice: D) #SPJ5

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Answer:

[tex]x=5[/tex]

Step-by-step explanation:

Equation - [tex]10=2x[/tex]

Solve - divide both sides by 2 - [tex]5 = x[/tex]

Answer:

No.

Step-by-step explanation:

Here i put it in a graph for you to see.

Answer:

Greater 1 1/2 is 1.50

Step-by-step explanation:

Please Brainliest if right <3

Answer:

Yes cuz 1.75= 1 3/4 while 1 1/2= 1 2/4

Step-by-step explanation:

The standard equation of the sphere is (x + 6)² + y² + z² = 36. The sphere is tangent to the yz-plane, the radius is the distance from the center (-6, 0, 0) to the yz-plane, which is 6 units.

To find the standard equation of the sphere with the given characteristics, we can use the formula for the equation of a sphere:

(x - h)² + (y - k)² + (z - l)² = r²

where (h, k, l) represents the center of the sphere and r represents the radius.

In this case, the center of the sphere is (-6, 0, 0) and it is tangent to the yz-plane. Since the yz-plane is defined by x = 0, the x-coordinate of the center of the sphere matches the x-coordinate of any point on the yz-plane. Therefore, the distance between the center of the sphere and the yz-plane is the radius of the sphere.

Since the sphere is tangent to the yz-plane, the radius is the distance from the center (-6, 0, 0) to the yz-plane, which is 6 units.

Plugging these values into the equation of a sphere, we have:

(x - (-6))² + (y - 0)² + (z - 0)² = 6²

(x + 6)² + y² + z² = 36

Thus, the standard equation of the sphere is (x + 6)² + y² + z² = 36.

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We have proved the first assertion that "If x is even and y is odd, then x + 2y is even" using direct proof. However, the second assertion "If x and y are odd, then (x + 3) + y is odd" is not true.

A.

The truth value of statement a) VX EN, x + 4 < 2 is false because there is no natural number x in the set N = {1, 2, 3, 4, 5} that satisfies the inequality x + 4 < 2.

The truth value of statement b) 3x EN, x + 2 > 5 is true because for all natural numbers x in the set N = {1, 2, 3, 4, 5}, the inequality 3x + 2 > 5 holds.

The negations of the given statements are:

Negation of a): ~ (VX EN, x + 4 < 2) which is EX EN, ~(x + 4 < 2), i.e., there exists an x in N such that x + 4 is not less than 2.

Negation of b): ~ (3x EN, x + 2 > 5) which is EX EN, ~(x + 2 > 5), i.e., there exists an x in N such that x + 2 is not greater than 5.

B.

To prove the assertion "If x is even and y is odd, then x + 2y is even" using direct proof, we assume that x is even and y is odd. We can express x as 2a (where a is an integer) and y as 2b + 1 (where b is an integer). Substituting these values into x + 2y, we get 2a + 2(2b + 1) = 2(a + 2b + 1), which is clearly an even number. Hence, x + 2y is even.

To prove the assertion "If x and y are odd, then (x + 3) + y is odd" using direct proof, we assume that x and y are odd. We can express x as 2a + 1 and y as 2b + 1. Substituting these values into (x + 3) + y, we get (2a + 1 + 3) + (2b + 1) = 2(a + b + 2), which is clearly an even number. This contradicts the assertion, and therefore, it is not true.

In summary, we have proved the first assertion that "If x is even and y is odd, then x + 2y is even" using direct proof. However, the second assertion "If x and y are odd, then (x + 3) + y is odd" is not true.

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Without specific alternative hypotheses and distribution parameters, it is not possible to determine the type I error rate.

a) The type I error rate of this test is 0.01, which is the significance level chosen for the test. It represents the probability of rejecting the null hypothesis when it is actually true. In this case, if the data is indeed normally distributed with a mean of 10 and variance of 4, there is a 1% chance of incorrectly rejecting the null hypothesis.

b) To determine the type II error rate, we need to know the specific alternative hypothesis and the distribution parameters under that hypothesis. Without this information, we cannot calculate the type II error rate.

c) Similarly, without knowing the specific alternative hypothesis and the distribution parameters under that hypothesis (mean and variance), we cannot calculate the type II error rate for the scenario where the data is normally distributed with a mean of 9 and a variance of 16.

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Answer:

a

Step-by-step explanation:

correct anwer is A

The correct matching of the confidence level with the confidence interval for μ is as follows:

x ± 1.96 --> A. 95%

x ± 2.575 --> B. 99%

x ± 1.645 --> C. 90%

A confidence level of 95% corresponds to a critical value of 1.96. This means that if we construct a confidence interval by taking the sample mean (x) and adding or subtracting 1.96 times the standard error, we can be 95% confident that the true population mean (μ) falls within this interval.

A confidence level of 99% corresponds to a critical value of 2.575. Similarly, constructing a confidence interval using the sample mean and adding or subtracting 2.575 times the standard error will give us a wider interval within which we can be 99% confident that the true population mean falls.

A confidence level of 90% corresponds to a critical value of 1.645. Constructing a confidence interval using the sample mean and adding or subtracting 1.645 times the standard error will give us a narrower interval within which we can be 90% confident that the true population mean lies.

These critical values are based on the standard normal distribution and are chosen to achieve the desired level of confidence.

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Step-by-step explanation:

400 in. is the correct answer

For a pyramid, volume= (1/3) x b x h where

B= base area, and

h= height .

So, volume= (1/3) x (200in^2) x (6in) = 400in^3.

- Chilio

suppose that number is ( x ).

three time of it means : 3 × x

six more means : + 6

So;

Six more three times a number means :

3x + 6

Thus, f ( x ) = 3x + 6

Answer:

135

Step-by-step explanation: