Answer:
x=55.5
Step-by-step explanation:
2x=111
Isolate x by dividing both sides by 111
x=55.5
Answer:
A ![\frac{x+5}{12}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%2B5%7D%7B12%7D)
Step-by-step explanation:
Answer:
l = w + 2
Perimeter = w + 2 + w + 2 + w + w = 4w + 4 = 56
4w = 52
w = 13
Answer:
Step-by-step explanation:
Given question is incomplete; here is the complete question,
Here is an equation that represents a function: 72x + 12y = 60.
Select all the different equations that describe the same function.
A). 120y + 720x = 600
B). y = 5 - 6x
C). 2y + 12x = 10
D). y = 5 + 6x
E). ![x=\frac{5}{6}-\frac{1}{6}y](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%7D%7B6%7D-%5Cfrac%7B1%7D%7B6%7Dy)
F). 7x + 2y = 6
G). ![x=\frac{5}{6}+\frac{y}{6}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%7D%7B6%7D%2B%5Cfrac%7By%7D%7B6%7D)
Option A.
720x + 120y = 600
![\frac{1}{10}(720x+120y)=\frac{1}{10}(600)](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B10%7D%28720x%2B120y%29%3D%5Cfrac%7B1%7D%7B10%7D%28600%29)
72x + 12y = 60
True.
Option B.
y = 5 - 6x
6x + y = 5
12(6x + y) = 12(5)
72x + 12y = 60
True
Option C.
2y = 12x + 10
-12x + 2y = 10
-6(-12x + 2y) = -6(10)
72x - 12y = -60
False
Option D.
y = 5 + 6x
-6x + y = 5
-12(-6x + y) = -12(5)
72x - 12y = -60
False.
Option E.
![x=\frac{5}{6}-\frac{1}{6}y](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%7D%7B6%7D-%5Cfrac%7B1%7D%7B6%7Dy)
![72x=72(\frac{5}{6}-\frac{1}{6}y)](https://tex.z-dn.net/?f=72x%3D72%28%5Cfrac%7B5%7D%7B6%7D-%5Cfrac%7B1%7D%7B6%7Dy%29)
72x = 60 - 12y
72x + 12y = 60
True.
Option F.
7x + 2y = 6
6(7x + 2y) = 6(6)
42x + 12y = 36
False
Option G
![x=\frac{5}{6}+\frac{1}{6}y](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%7D%7B6%7D%2B%5Cfrac%7B1%7D%7B6%7Dy)
![72x=72(\frac{5}{6}+\frac{1}{6}y)](https://tex.z-dn.net/?f=72x%3D72%28%5Cfrac%7B5%7D%7B6%7D%2B%5Cfrac%7B1%7D%7B6%7Dy%29)
72x = 60 + 12y
72x - 12y = 60
False
Options A, B and E are the correct options.
Answer:
D. The students are not part of the population
Step-by-step explanation:
The first three options are true of this sample. D is the only option that is not true.