8-n=-4 what is the value of n

Hey there!

8 - n = -4

-n + 8 = -4

SUBTRACT 8 to BOTH SIDES

-n + 8 - 8 = -4 - 8

CANCEL out: 8 - 8 because that gives you 0

KEEP: -4 - 8 because that helps solve for your n-value

-4 - 8 = -12

NEW EQUATION: -n = -12

(We have a variable by itself it’s understood as a(n) invisible 1)

DIVIDE -1 to BOTH SIDES

-n/-1 = -12/-1

CANCEL out: -1/-1 because that gives you 1

KEEP: -12/-1 because that gives you the value of n

-12/-1 = 12

n = 12

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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