Answer:
simplify 36 - 4.5x + 36 to -4.5x + 72
simplify 102 - 7.5x - 60 to -7.5x + 42
add 7.5x to both sides
simplify -4.5x + 72 + 7.5x to 3x + 72
subtract 72 from both sides
simplify 42 - 72 to -30
divide both sides by 3
simplify 30/3 to 10
Answer: x = -10
1 cm = 1.5 feet
18 x 1.5 = 27
24 x 1.5 = 36
27 + 36 = 63
Therefore, 63 feet in area. =^)
If n is an even integer:
n(n + 2) = 48
n^2 + 2n - 48 = 0
(n + 8)(n - 6) = 0
n = -8 or n = 6
Hey there! :)
Answer:
r = 20.
Step-by-step explanation:
Given:
-4 = r/20 - 5
Begin by adding 5 to both sides:
-4 + 5 = r/20 - 5 + 5
1 = r/20
Multiply both sides by 20:
1 · 20 = r/20 · 20
r = 20.