21x-9+63=180
21x+54=180
21x=126
x=6
D because perpendicular lines intersect at a right angle and D is the only shape with right angles.
Answer:
B. 1 and D. 3.
Step-by-step explanation:
The figure below shows the graphs of f(x) = 3x - 1 (red) and g(x) = 2^x (blue).
The solutions of 3x - 1 = 2^x are the points at which the two curves intersect.
The solutions are at x = 1 and x = 3.
Check:
3 × 1 - 1 = 2¹ 3 × 3 -1 = 2³
3 - 1 = 2 9 - 1 = 8
2 = 2 8 = 8
Answer:
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Step-by-step explanation:
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I think it represents where something is starting from, like something growing up (a chart with rising numbers)