A= sides²
A = (x+3)²
A = (x + 3) (x + 3)
Next step is to FOIL.
x² + 3x + 3x + 9
x² + 6x + 9
Answer:
$116.84 Exactly
Step-by-step explanation:
Answer:
8x+100=1700
Step-by-step explanation:
8x+100=1700
8x+100-100=1700-100
8x=1600
8/8x=1600/8
x=200
Answer:
x = 20
Step-by-step explanation:
The two angles inside the triangle added together equals the one other angle that's outside the triangle. Its called an exterior angle.
42° + 5x + 4 = 7x + 6
combine like terms
5x + 46 = 7x + 6
subtract 5x
46 = 2x + 6
subtract 6
40 = 2x
divide by 2
20 = x
-8 = -7 + x...add 7 to both sides
-8 + 7 = x
-1 = x <==