1054 (9-8x)=78
(9-8x)= (78÷1054)
9-8x = 0.074
-8x=0.074-9
-8x=-8.926
x= (-8.926÷-8)
x= 1.1157
Answer:
1.99
Step-by-step explanation:
We have been given the heights of adult men in America are normally distributed, with a mean of 69.8 inches and a standard deviation of 2.61 inches. We are asked to find the z-score of height of man with 6 feet 3 inches.
We will use z-score formula to solve our given problem.
, where,
z = z-score,
x = Sample score,
= Mean,
= Standard deviation,
6 feet 3 inches = 72+3 inches = 75 inches
![z=\frac{75-69.8}{2.61}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B75-69.8%7D%7B2.61%7D)
![z=\frac{5.2}{2.61}](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B5.2%7D%7B2.61%7D)
![z=1.99233716475](https://tex.z-dn.net/?f=z%3D1.99233716475)
![z\approx 1.99](https://tex.z-dn.net/?f=z%5Capprox%201.99)
Therefore, the z-score for the man with height of 6 feet 3 inches is 1.99.
Answer:
i don't know this one!
Step-by-step explanation:
sorry!
Simplifying
5m + -7 = 6m + -9
Reorder the terms:
-7 + 5m = 6m + -9
Reorder the terms:
-7 + 5m = -9 + 6m
Solving
-7 + 5m = -9 + 6m
Solving for variable 'm'.
Move all terms containing m to the left, all other terms to the right.
Add '-6m' to each side of the equation.
-7 + 5m + -6m = -9 + 6m + -6m
Combine like terms: 5m + -6m = -1m
-7 + -1m = -9 + 6m + -6m
Combine like terms: 6m + -6m = 0
-7 + -1m = -9 + 0
-7 + -1m = -9
Add '7' to each side of the equation.
-7 + 7 + -1m = -9 + 7
Combine like terms: -7 + 7 = 0
0 + -1m = -9 + 7
-1m = -9 + 7
Combine like terms: -9 + 7 = -2
-1m = -2
Divide each side by '-1'.
m = 2
Simplifying
m = 2
(4y+1)(2y+1) this is the answer