Answer:
$2.10
Step-by-step explanation:
change the rate of sales tax to a decimal by dividing by 100, so 3%=.03
multiply the price by .03
For perimeter you just add the sides up, so 15+12+9 which = 36
The dimensions given when you have a triangle is the base and height of the triangle. The formula for the area is
A = 0.5bh
The unknown here is h. We can determine that from the cost of mulch that covers the whole area of the triangle. The equation would be:
4A = 33
Substituting A = 0.5*5.5*h = 2.75h to the equation:
4(2.75h) = 33
11h = 33
h = 33/11
h = 3 feet
Mentally
As they are numbers which you can do mental math with since they are whole numbers.
Answer:
81/16
Step-by-step explanation:
(⅔)-⁴
81/16
= 5.0625
