3(18 - x/3 = -7)
54-x = -21
-x = -75
x = 75
Answer:
i dont know the answer hihihihi
6a perimeter is 12 cms and 28cms.
6b side length is 90 cms
6c areas 9sq cm and 49 sq cms
6d 11 cms
Subtract 20n from both sides of the equation.
n^2+100-20n=0
factor using the perfect square rule.
(n-10)^2=0
set the n-10 equal to 0.
n-10=0
add 10 to both sides of the equation.
n=0
