Hi
609.9 ⇒ 85%
x ⇒ 100%
85x = 100·(609.9)
85x = 60,990
x = (60,990)/85
x = 717.5294117... ≈ 717.53
85% of 717.53 ⇒ 0.85 × 717.53 = 609.9005 ≈ 609.9
Answer: 717.53
The answer is 9 because if you find the two side lengths and find the area of the square then divide it by 2 it equals 9
The identity property is shown
Solve for n by simplifying both sides of the equation, then isolating the variables.
n=54
Hope I helped
