70 x n%= 56
n% = 70 x 56
n = 0.8 x 100
n = 80
the percent decrease = 100 - 80
= 20 %
-20.00% is the percent decrease
Let, Unknown number = x
8x-51 = 53
8x = 53+51
x = 104/8
x = 13
Answer:
$39
Step-by-step explanation:
Using the given formula :
I = P × R × T
I = 30 × 10/100 × 3
I = $9
She have = 30 + 9 = $39
b.) cos((π/2)-Ф)=-3/5 is true because :
cos((π/2)-Ф)= sin(Ф)