A=9,805×(1+0.085×7÷12)
A=10,291.16
sec ( t ) cos ( t ) = (1/cos (t)) *cos(t) = 1
He pays $86.70 for the carpet. 8 time 10.2 equals 81.6.
10.2 divided by 2 equals 5.1. you will use 5.1 later.
81.6 + 5.1 = 86.7
Equivalent ratios both the numerator and denominator by the same value, e.g.
27/30
18/20
