Answer:
x = 22
Step-by-step explanation:
90 = (5x - 20)
+20 +20
110 = 5x
/5 /5
22 = x
Hope this helps!
The expression (n+3) represents the measure of an exterior angle of a regular octadecagonal.
X = -30
First combine like terms (0.02x - 0.01x = 0.01x) (-4 - 2 = -6)
0.01x - 6 = -6.3
Then add 6 (-6 + 6 = 0) (-6.3 + 6 = -0.3)
0.01x = -0.3
Then divide by 0.01 to find what x is alone (0.01x ÷ 0.01 = x) (-0.3 ÷ 0.01 = -30)
x=-30
Area of triangle = 1/2 (8)(4) = 16
Area of semi-circle = 1/2 (3.14)(4^2) = 1/2(3.14)(16) = 25.12
Area of figure = 16 + 25.12 = 41.12
answer
41.12 square units
<u>7x + 3 = 9x - 7</u>
Subtract 7x from each side: + 3 = 2x - 7
Add 7 to each side: 10 = 2x
Divide each side by 2 : <em>5 = x </em>
