The answer would be 66.
6(-4 +15)
=
66
The formula for the circumference of a circle = 2 x radius x pi
The radius is given as 21 cm and pi = 3.142
Circumference = 2 x 21 x 3.142 = 131.964 cm
Multiply it out to get 5/7*1/9=5/63. This is an exact value of the product.
5 + (3x) = 32
-5 -5
3x = 27
/3 /3
x = 9
B. because anything raised to a power besides 1 isnt linear.