26% can be seen as 26/100; % indicates "out of one hundred" after all.
After that, simply divide by 2.
26/2=13
100/2=50
13/50 is the simplest form.
9514 1404 393
Answer:
see attached
Step-by-step explanation:
A graphing calculator does this nicely.
Answer:
![Average = 10](https://tex.z-dn.net/?f=Average%20%3D%2010)
Step-by-step explanation:
Given
--- Average
--- Average
Required
Determine the overall average
Represent the sum of the first three with x.
So:
![\frac{x}{3} = 14](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B3%7D%20%3D%2014)
Solve for x
![x = 14 * 3](https://tex.z-dn.net/?f=x%20%3D%2014%20%2A%203)
![x = 42](https://tex.z-dn.net/?f=x%20%3D%2042)
Represent the sum of the next seven with y.
So:
![\frac{y}{7} = 4](https://tex.z-dn.net/?f=%5Cfrac%7By%7D%7B7%7D%20%3D%204)
Solve for y
![y = 4 * 7](https://tex.z-dn.net/?f=y%20%3D%204%20%2A%207)
![y = 28](https://tex.z-dn.net/?f=y%20%3D%2028)
The overall average is calculated as thus:
![Average = \frac{x + y}{7}](https://tex.z-dn.net/?f=Average%20%3D%20%5Cfrac%7Bx%20%2B%20y%7D%7B7%7D)
![Average = \frac{42 + 28}{7}](https://tex.z-dn.net/?f=Average%20%3D%20%5Cfrac%7B42%20%2B%2028%7D%7B7%7D)
![Average = \frac{70}{7}](https://tex.z-dn.net/?f=Average%20%3D%20%5Cfrac%7B70%7D%7B7%7D)
![Average = 10](https://tex.z-dn.net/?f=Average%20%3D%2010)
Answer: c= -4
Step-by-step explanation:
14=-2c-6-3c
Add 6 on both sides
= 20=-2c-3c
Simplify on both sides
= 20=-5c
Divide by -5 on both sides
= -4=c
I think that is the answer.
The correct answer is the last pair (1,3).