251.2 =
(3.14)(r^2)(15)
251.2 =
(47.1) (r^2)
251.2 = (15.7)(r^2)
251.2 ÷ 15.7 = 16 15.7 ÷ 15.7 = 1
16 ≈ r^2
4 ≈ r
Answer: the radius is 4 inches
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The slope is the coefficient
the coefficient is then number in front of x (or any other variable)
so 12 is the slope
Answer:
<h2>f(-7) = -6</h2>
Step-by-step explanation:
Put x = -7 to f(x) = 2x + 8:
f(-7) = 2(-7) + 8 = -14 + 8 = -6
Answer:
1. x = 12
2. x = 18
Step-by-step explanation:
1. Angle ABD + angle CBD = 180 degrees
(4x+6) + (11x-6) = 180
4x + 6 + 11x - 6 = 180
4x + 11x = 180
15x = 180
x = 12
2. 2x + 3x = 90
5x = 90
x = 18