if you are calculating a 10% off discount, you need to to know the sale price.

add 10% to the original price

multiply the original price by 10%

multiply the original price by 90%

subtract 90% from the original price

multiply the original price by 90%

Step-by-step explanation:

obviously you know 10% of 100 is 10 so if you are trying to take 10% off of 100 you need to multiply it by 0.90(90%)

100*0.90=90

90 dollars is the price you should be left with after buying a 100$ item when it is 10% off

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation:

hi,

i'm 75% sure the answer is 1,1 to both lines.

have a great day