Fifteen less than eight times a number (n) is twenty seven in equation form

x = -4/5 = -0.800

Step-by-step explanation:

Pull out like factors :

-12 - 15x  =   -3 • (5x + 4)

Solve :  

-3   =  0

Solve  :

5x+4 = 0

5x = -4

x = -4/5 = -0.800

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6