C) 84
7(6x2)
Sry if it’s wrong
Answer:
Step-by-step explanation:
1.5
The number is 6400.
We have given that,
divided 80 by my number, and then added 13.
<h3>What is the expression?</h3>
An expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.
Suppose the number is x
![\frac{x}{80}+13=93](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B80%7D%2B13%3D93)
Subtract 13 from both sides
![\frac{x}{80}+13-13=93-13](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B80%7D%2B13-13%3D93-13)
![\frac{x}{80}=80](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B80%7D%3D80)
Multiply both sides by 80
![\\\frac{80x}{80}=80\cdot \:80](https://tex.z-dn.net/?f=%5C%5C%5Cfrac%7B80x%7D%7B80%7D%3D80%5Ccdot%20%5C%3A80)
x=6400
Therefore the number is 6400.
To learn more about the number visit:
brainly.com/question/251701
#SPJ1
Answer:
The test statistic needed to evaluate the claim is t = -1.08.
Step-by-step explanation:
The test statistic is:
![t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%7D)
In which X is the sample mean,
is the expected value of the mean, s is the standard deviation of the sample and n is the size of the sample.
At a certain university, the average attendance at basketball games has been 3125. The athletic director claims that the attendance is the same as last year.
This means that ![\mu = 3125](https://tex.z-dn.net/?f=%5Cmu%20%3D%203125)
Due to the dismal showing of the team this year, the attendance for the first 9 games has averaged only 2915 with a standard deviation of 585.
This means that ![n = 9, X = 2915, s = 585](https://tex.z-dn.net/?f=n%20%3D%209%2C%20X%20%3D%202915%2C%20s%20%3D%20585)
What is the test statistic needed to evaluate the claim?
![t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7BX%20-%20%5Cmu%7D%7B%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%7D)
![t = \frac{2915 - 3125}{\frac{585}{\sqrt{9}}}](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7B2915%20-%203125%7D%7B%5Cfrac%7B585%7D%7B%5Csqrt%7B9%7D%7D%7D)
![t = -1.08](https://tex.z-dn.net/?f=t%20%3D%20-1.08)
The test statistic needed to evaluate the claim is t = -1.08.