Answer:
21x - 14y - 63
Step-by-step explanation:
Here you go :D
You need to find "two-fifths of 30." Of here means multiplication:
![\begin{aligned}\dfrac{2}{5}\cdot 30 &= \dfrac{2}{5}\cdot\dfrac{30}{1}\\[0.5em] &= \dfrac{60}{5}\\[0.5em] &= 12\end{aligned}](https://tex.z-dn.net/?f=%5Cbegin%7Baligned%7D%5Cdfrac%7B2%7D%7B5%7D%5Ccdot%2030%20%26%3D%20%5Cdfrac%7B2%7D%7B5%7D%5Ccdot%5Cdfrac%7B30%7D%7B1%7D%5C%5C%5B0.5em%5D%20%26%3D%20%5Cdfrac%7B60%7D%7B5%7D%5C%5C%5B0.5em%5D%20%26%3D%2012%5Cend%7Baligned%7D)
There are 12 athletes in the club.
Transform M to the standard normally distributed random variable Z via

where
and
are the mean and standard deviation for
, respectively. Then

Answer:

Step-by-step explanation:
If you were to replace x with 0 in each of the equations, you would get
from top to bottom choices:


2
-2
Since we can see that the line touches the y-axis on the number -2, we know that it is the last choice that is the answer