What would be the value of X

Mathematics

2 answers:

Alex_Xolod [135]3 years ago

7 0

To find the value of x, you need to set up a proportion.This is the proportion you would set up:

2.5 x
---- = ------
3.75 60

x=40

-Dominant- [34]3 years ago

5 0

Okay so.
When you take 60 from the enlarged picture and divide it from the original (3.75), you get 16.
You're trying to find X, not the amount it took to multiply to get to 60 by dividing it by 3.75.
So answer choice A will be eliminated.
Answer choice D will be eliminated also because 90 is bigger than 60, and the side with 60 is bigger than the X side.

So, when you take the 16 and multiply it by 2.5 you get 40.
I believe your answer to be answer choice B.
:D

You might be interested in

What is the number to the right of the decimal point called?

koban [17]

Tenths. Hope this helped.

5 0

3 years ago

Determine the margin of error for a 90% confidence interval to estimate the population mean when s = 40 for the sample sizes bel

Ann [662]

Answer:

a) The margin of error for a 90% confidence interval when n = 14 is 18.93.

b) The margin of error for a 90% confidence interval when n=28 is 12.88.

c) The margin of error for a 90% confidence interval when n = 45 is 10.02.

Step-by-step explanation:

The t-distribution is used to solve this question:

a) n = 14

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 14 - 1 = 13

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 13 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.9}{2} = 0.95$ . So we have T = 1.7709