1. -18 +15x = 3(4x-6) + 3x
-18 + 15x = 12x - 18 + 3x
-18 + 3x = -18 + 3x
3x = 3x
x = All Real Numbers (because we don't know what x is since the equation is 3x = 3x, we can assume that it is all "real" numbers)
2. -10 + 5x = 5(x - 3) + 5
-10 + 5x = 5x - 15 + 5
-10 = -10
Answer Undefined (because the x coefficients canceled out, we don't know what x even is, so we can claim it as undefined.)
If you divide each number by the previous one, you get:
-86 / -172 = 1/2
-43 / -86 = 1/2
-21.5 / -43 = 1/2
The common ratio is 1/2 = 0.5
D. All squares are quadrilaterals. Good luck!<span />
Answer:
8 83/104.
Step-by-step explanation:
4 9/13 * 1 7/8
= 61/13 * 15/8
= 915/104
= 8 83/104.
Answer:
x = 138
Step-by-step explanation:
The 2 arcs above the diameter form a semicircle = 180°
x + 42 = 180 ( subtract 42 from both sides )
x = 138