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4 years ago

What are the y- coordinates of b

Mathematics

1 answer:

coldgirl [10]4 years ago

8 0

3.2 is the answer trust

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Let f(x) = 24 over 3x-2 find f(-2)

san4es73 [151]

I hope this helps you

7 0

3 years ago

The waiting times at a certain bank are normally distributed with a mean waiting time of 3.7 minutes and a standard deviation of

muminat

Answer:

From the given options we can say the correct answer is d.) 6.3

Step-by-step explanation:

The waiting times at the bank are given to be normally distributed.

The mean of the waiting time is given as = 3.7 minutes

The given standard deviation is = 1.4 minutes

It is required to find the waiting time at the 97th percentile.

So we are required to find the time which can be said to be the waiting time which occurs with 97 % probability.

Let the time required be designated as y.

Therefore we can write p(X < y) = 0.97 (where 0.97 means the 97th percentile)

This is a left tailed test.

Using the formula from MSEXCEL to find y we get

y = NORMINV(0.97, 3.7, 1.4) = 6.333.

The other approach would to find the Z value corresponding to the probability value from the Z Table

The Z value for a probability of 0.97 gives us Z = 1.881 .

Therefore $\frac{y - 3.7}{1.4} = 1.881$ . Therefore y = (1.881 × 1.4) + 3.7 = 6.33

Therefore from the given options we can say the correct answer is d.) 6.3

7 0

3 years ago

A friend rewrote the expression 5(x + 2) as 5x + 2. Write a few sentences explaining the error. Then, rewrite the expression 5(x

kozerog [31]

If an expression is shown as 5(x+2) the numbers inside the parenthesis must both be multiplied by the number outside. Only x was multiple. The correct rewritten expression would be 5x+10

8 0

3 years ago

I WILL GIVE YOU THE BRAINLIEST IF YOU ARE CORRECT

posledela

Answer:

2550

Step-by-step explanation:

4 0

3 years ago

Can someone help me understand Percent of Change?

mamaluj [8]

To solve a problem about percent of change, you need to divide the amount of change by the original amount. To find the amount of change, subtract the initial amount from the final amount. The formula for percent of change can be written:

Percent of Change = (Final amount - Initial amount)/Initial amount

For example, If you start with 100 and end with 120, you would write:

Percent of change = (120 - 100)/100

Percent of change = 20/100

Percent of change = .2

Since you want a percent, you need to change the decimal to a percent. To do this, move the decmial place 2 places to the right and add a percent sign.

Percent of change = 20%

3 0

4 years ago