A ball was dropped from a height of 150 cm. The rebound factor of the ball is

0.8. About how high, in centimeters, did the ball go after the third bounce?

A. 77

B. 96

C. 234

D. 293

Step-by-step explanation:

I=V/R

I*R=V

R=V/I

:) :( :) :( :)

The type of friction acting on the box is static friction. This is because the box is not moving, and static friction is the force that opposes motion when an object is at rest.

The direction of the friction force is opposite to the direction of the force applied by the boy. This is because friction always acts in the opposite direction to the applied force, to prevent the object from moving.

The free body diagram for the box would include the force of gravity acting downwards (50 kg x 9.8 m/s² = 490 N), the force applied by the boy (20 N at an angle of 30°), and the static friction force acting in the opposite direction to the applied force.

To calculate the amount of friction force, we can use the formula F_friction = F_applied x coefficient of friction. Since the box is not moving, the friction force is equal in magnitude to the applied force. Therefore, F_friction = 20 N.

To calculate the coefficient of friction, we can use the formula coefficient of friction = F_friction / F_normal. The normal force is equal in magnitude to the force of gravity, which is 490 N. Therefore, coefficient of friction = 20 N / 490 N = 0.041.

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9514 1404 393

Answer:

  a = -10

Step-by-step explanation:

Subtract 5x from the given equation and compare to the desired equation.

  -5x +y = -6

  ax +2y = 6

For the lines to have the same slope, the ratio of x and y coefficients must be the same.

  -5/1 = a/2

  -10 = a . . . . . multiply by 2

Step-by-step explanation:

the line passes through (0,-2) and perpendicular to the graph of y=5x+7.

solution :

the slope = -1/5

the equation :

y+2 = -1/5 (x-0)

y = -1/5x - 2

Answer:

I'm pretty sure it is B...

Step-by-step explanation:

I am on that question on edge and i'll let you know if it is correct after I submit it.

Answer:

B. (-100,100)

Step-by-step explanation:

Answer:

D. 29 I just know the awnser sorry

To find the value of f(−2), we substitute −2 for x in the function f(x):

f(−2) = 4(-2)^2 − 3(-2) + 7

= 4(4) − 3(2) + 7

= 16 − 6 + 7

= 11

Therefore, f(−2) = 11.

Answer:

Well Circumference = πr^2, but I don't know what you're asking for?

Answer: A and B (first answer choice)

Explanation:

Start at the origin (0,0) where the x and y axis cross. Then move left 1 and up 5 to arrive at (-1,5). The two lines A and B cross at this location, so (-1,5) is the solution to the system formed by just these two equations alone. We ignore lines C and D.

Answer:

x = 31; AB = 74

Step-by-step explanation:

if ABC = JKL then AB = JK

2x + 12 = 4x - 50

2x + 12 - 4x + 50 = 0

- 2x = - 62

x = 31

AB = 2 * 31 + 12 = 62 + 12 = 74

Answer:

correct answer 176

Step-by-step explanation:

Answer:

\(80 \: c = 176 \: f\)

Step-by-step explanation:

\(f = ( \frac{9}{5} \times c) + 32 \\ f = ( \frac{9}{5} \times 80) + 32 \\ f = (\frac{720}{5} ) + 32 \\ f = 144 + 32 = 176\)

Answer:

3x+5y = -13

Step-by-step explanation:

Since there are two variables, you must solve for one of them first. One way we can do that is through elimination.

X seems the easiest to eliminate.

We can subtract the two equations.

 x - 4y = -10
- 2x+9y = -3

If we subtract it like this, it wouldn't eliminate any variables. So, let's multiply the first equation by 2 so both equations have 2x.

 2x - 8y = -20
- 2x+9y = -3
Now, subtract the equations.

-17y = -17

We can solve for y now.

y = 1

Since we have y's value, we can solve for x. Plug y back into one of the equations.

x - 4(1) = -10

x - 4 = -10

x = -6

Now that we have both the x and y values, simply plug it into 3x+5y.

3(-6) + 5(1)

-18 + 5
-13

So the answer is -13

Answer:

The products of -3(1) and -3(-1) are the same because both expressions result in the multiplication of -3 and a number, where one of the numbers is positive and the other is negative. The product of these two numbers is always negative.

Step-by-step explanation:

-3(1) means multiplying -3 by 1, which gives -3 as the product.

-3(-1) means multiplying -3 by -1, which gives 3 as the product.

Even though the two expressions are different, we can see that both involve multiplying -3 with a number, where one of the numbers is positive and the other is negative.

When we multiply a negative number and a positive number, the product is always negative. Similarly, when we multiply a negative number and a negative number, the product is always positive.

So, in both -3(1) and -3(-1), we are multiplying a negative number (-3) with a positive number (1 in the first expression and -1 in the second expression). Therefore, the products of both expressions are negative (-3 in the first expression and 3 with a negative sign in the second expression).

Hence, we can conclude that the products of -3(1) and -3(-1) are the same and equal to -3.

y = f(x) by removing the parameter, resulting in an explicit relationship between x and y.0 < t < 2, y = 3 + 2x, x = -t, y = 3 - 2t.

Any function that is modeled using an independent variable is said to be explicit. When y is a dependent variable and depends on the independent variable x, for instance, the expression y = 4x - 7 is explicit. A function that has multiple variables and one of them that is a function of another set of variables is known as an explicit function.

The dependent variable can be directly expressed in terms of the independent variable in an explicit algebraic function. When discussing writing, the terms explicit and implicit are used to distinguish between things that are directly stated and those that are implied. The use of transition words and phrases depends on whether the relationship between the sentences is explicit (stated). If a relationship is implied in a sentence, the reader must draw that conclusion.

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Answer:

12

Step-by-step explanation:

3 4's

3+3+3+3=12

Hope that helps :)

Math SAT scores explain about 98.7% of the variation in the total SAT scores.

In statistics, correlation or dependence exists as any statistical relationship, whether causal or not, between two random variables or bivariate data.

A correlation exists as a statistical measure (expressed as a number) that defines the size and direction of a relationship between two or more variables. A correlation between variables, however, does not automatically mean that the change in one variable exists as the cause of the change in the values of the other variable.

Since r² exists = (0.9935)² = 0.9870, we interpret r² as 98.7% of the variation in the y variable exists explained by the x variable.

In context, math SAT score explains about 98.7% of the variation in total SAT score.

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Answer:

$5.75 per foot

Step-by-step explanation:

if 2 yards is 6 feet, 34.48 divided by 6 = 5.74666667 rounded to the nearest tenth is 5.75

Answer:

C

Step-by-step explanation:

Answer:

(-7, 3) i think, not 100% sure

Step-by-step explanation:

Answer:

Both (1,3) and (-2,-4)

Step-by-step explanation: i got it right in Khan Academy (n˘v˘•)¬

hope it helps!

Answer:

x=12

Step-by-step explanation:

5x-22=4x-10

5x-4x=-10+22

x=12

Answer:

it's c

y < x

y < 2

Step-by-step explanation:

Hope this helps have a nice day!!!

:)

56.25 would have to be added  to complete the square.

Given,

The quadratic equation; x² - 15x + 22 = 0

We have to solve this quadratic equation by using the method of complete the square.

Complete the square method;

So, here,

That is,

x² - 15x + 22 - 15/2 = x² - 15x + 22 (-7.5)² = x² - 15x + 22 + 56.25

Therefore,

56.25 would have to be added to complete the square.

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Answer:

The second one is wrong, so select the rest

Therefore, The p-value is the probability of obtaining a test statistic as extreme or more extreme than the observed value, assuming the null hypothesis is true. If the p-value is less than the significance level, reject the null hypothesis; otherwise, fail to reject it.

To find the p-value from the t statistic on TI-84, you will need to perform a hypothesis test. Here are the steps:1. Enter your data into the calculator and choose the appropriate test.2. Calculate the t statistic by dividing the sample mean by the standard error.3. Determine the degrees of freedom. This is n-1 for a one-sample t-test or n1+n2-2 for a two-sample t-test. 4. Use the t-distribution table to find the critical value for your test.5. Calculate the p-value using the t-distribution function on the calculator.6. Compare the p-value to the significance level (usually 0.05) to determine whether to reject or fail to reject the null hypothesis.7.

Therefore, The p-value is the probability of obtaining a test statistic as extreme or more extreme than the observed value, assuming the null hypothesis is true. If the p-value is less than the significance level, reject the null hypothesis; otherwise, fail to reject it.

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Answer:

Two times the sum of a number and fifteen : 2*(N+15) is EQUAL to six times the number : 6N

So it's the third answer : 2(N+15)=6N

Good luck.

The proportion of rods with a length less than 29.9 cm is approximately 0.0764 (or 7.64%).

To find the proportion of rods that have a length less than 29.9 cm, we need to calculate the cumulative probability up to 29.9 cm using the normal distribution.

First, we need to calculate the z-score, which is a measure of how many standard deviations away from the mean a particular value is:

z = (x - μ) / σ

where x is the value we want to find the proportion for (29.9 cm in this case), μ is the mean (30 cm), and σ is the standard deviation (0.07 cm).

Plugging in the values, we get:

z = (29.9 - 30) / 0.07

= -0.1 / 0.07

≈ -1.4286

Next, we look up the cumulative probability corresponding to the z-score of -1.4286 in the standard normal distribution table. The table provides the area under the normal curve to the left of the given z-score.

From the standard normal distribution table, we find that the cumulative probability for a z-score of -1.4286 is approximately 0.0764.

Therefore, the proportion of rods with a length less than 29.9 cm is approximately 0.0764 (or 7.64%).

Note: The table of areas under the normal curve may be needed to obtain the precise value for the cumulative probability.

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The values of p and q in the geometric progression are: 3 to the nearest i decimal places and the GP is 2,6,18,-54,162,...

A geometric progression is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

The given sequence is

2,p,q,-54,162

The first term a = 2

The constant ratio r = 165/-54 = 3

The Fourth term T₄ = arⁿ⁻¹

arⁿ⁻¹ = 162

By substitution,

2*r³ =162

r³ = 81

r = ∛81

r = 4.3 approximately

r = 3

Then the GP is as follows

2

2*3 = 6

6*3=18

ie, 2, 6, 18, -54, 162, ....

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Correct question:

Given that 2,p,q,-54,162, ..... are in GP,

what is the values of p and q and the constant ratio

Answer: The answer is x=7.

Step-by-step explanation: Now let's solve your equation step-by-step:

\(\frac{1}{2}x+\frac{6}{3}=x-\frac{3}{2}\).

Step 1. Simplify the both sides of the equation: \(\frac{1}{2}x+2=x+\frac{-3}{2}\).

Step 2. Subtract x from the both sides: \(\frac{1}{2}x+2-x=x+\frac{-3}{2}-x\) to

\(\frac{-1}{2}x+2=\frac{-3}{2}\).

Step 3. Subtract 2 from the both sides: \(\frac{-1}{2}x+2-2=\frac{-3}{2}-2\) to

\(\frac{-1}{2}x=\frac{-7}{2}\).

Last but not least is step 4. Multiply the both sides by 2/(-1):

\((\frac{2}{-1})*(\frac{-1}{2}x)=(\frac{2}{-1})*(\frac{-7}{2})\) to \(x=7.\) I hope your answer is very helpful, please mark me as brainliest, and have a happy holidays! :D

\(3x -2y =21 ~~....(i)\\\\4x+3y = 11~~~...(ii)\\\\\text{From (i)}\\\\3x - 2y = 21 \\\\\implies x = \dfrac{21+2y}3 = 7 +\dfrac{2y}3 ~~~...(iii).\\\\\text{Substitute x in equation (ii):}\\\\4\left( 7 + \dfrac{2y}3 \right) + 3y = 11\\\\\\\implies 28 + \dfrac{8y}3 + 3y =11\\\\\implies \dfrac{17y}3 = 11-28 = -17\\\\\implies \dfrac{y}3 = -1\\\\\implies y =-3\\\\\text{Substitute} ~ y =-3 ~ \text{in equation (iii):}\\\\\x=7+\dfrac{2(-3) }3 = 7-2 =5\\\\\text{Hence,} ~(x,y) = (5,-3)\)

Answer:

x represents the number of tickets per order and y represents the total cost of an order.