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g100num [7]
3 years ago
8

Pls help help help 11 points also this is mobymax

Mathematics
1 answer:
Irina18 [472]3 years ago
4 0

Answer: 18 + 6a + 6b

Step-by-step explanation:

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Traveling at a average speed of 50 miles per hour the trip from point a to be is 2 hours traveling at a speed of 20 miles per ho
dem82 [27]
What's your question..?
7 0
3 years ago
6.50 is 25$ of what number?
Ivenika [448]

Answer:

3.85

Step-by-step explanation:

6.50 goes into 25 how many times

6.50×?=25

6.50 divided by 25 = 3.846153846

Simplify

3.85

8 0
3 years ago
I don’t know how to do it, please teach me !!!
cricket20 [7]

As described in z-distribution the answers are given below:

a) The 95% confidence interval estimate for the population mean spending by a customer on visiting salon per month is given as follows: (747, 853).

b) The sampling error at 95% confidence level is of: $35.78.

What is a z-distribution ?

The normal distribution with a mean of 0 and a standard deviation of 1 is referred to as the standard normal distribution (also known as the Z distribution) (the green curves in the plots to the right). It is frequently referred to as the bell curve since the probability density graph resembles a bell.

solution:

The bounds of the confidence interval are given as follows:

In which:

is the sample mean.

z is the critical value.

n is the sample size. is the standard deviation for the population.

The parameters for this problem are given as follows:

Hence the lower bound of the interval is of:

800 - 200 x 1.96/square root of 55  = 747.

The upper bound of the interval is of:

800 + 200 x 1.96/square root of 55  = 853.

The sampling error for a sample size of 120 is calculated as follows:

200 x 1.96/square root of 120 = $35.78.

To learn more about the z-distribution from the given link

brainly.com/question/4079902

#SPJ1

5 0
1 year ago
-2log5 7x=2<br><br> the 5 is small please help me
RSB [31]
-2log_5 7x = log_5 2

log_5[1/(7x)^2] = log_5 2

log_5(1/49x^2) = log_5 2

log_5(1 - 49x^2) = log_5 2

1 - 49x^2 = 2

You finish.

3 0
2 years ago
A group of friends were working on a student film that had a budget of $500. They used $25 of their budget on props. What percen
Dmitriy789 [7]

Answer:

1/8

Step-by-step explanation:

5 0
3 years ago
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