Answer:
56
Step-by-step explanation:
Basically you want to find out what is 70% of 80.
first you have to set up your problem
= ![\frac{70}{100}](https://tex.z-dn.net/?f=%5Cfrac%7B70%7D%7B100%7D)
the first fraction would be the percent (70) over 100. (you always use 100)
The fraction to the left would be n over 80. the denominator (the number on the bottom) would be the whole amount. n would be the unknown number
To solve you would use the butterfly method. 80 x 70 and 100 x n. 80 x 70 is 5600 and 100 x n is 100n.
The final step is dividing. 5600 divided by 100 giving you 56
Answer:
m = ![\frac{2c-ac}{a-6}](https://tex.z-dn.net/?f=%5Cfrac%7B2c-ac%7D%7Ba-6%7D)
Step-by-step explanation:
distribute parenthesis on both sides
ac + am = 2c + 6m ( collect terms in m on left side )
subtract 6m from both sides
ac + am - 6m = 2c ( subtract ac from both sides )
am - 6m = 2c - ac ( factor left side )
m(a - 6) = 2c - ac ( divide both sides by (a - 6))
m = ![\frac{2c-ac}{a-6}](https://tex.z-dn.net/?f=%5Cfrac%7B2c-ac%7D%7Ba-6%7D)
√120 ≈ 10.95
and 10.95²≈ 120
therefore each side of this square room is about 10.95 feet.