Evaluate.
A. 13.5
B. -13.5
C. -9
D. 27
Answer: C
Mathematics
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Solve.A domed ceiling is a parabolic surface. For the best lighting on the floor, a light source is to be placed at the focus of the surface. If 3 m down from the top of the dome the ceiling is 15 m wide, find the best location for the light source.
A. 9.4 m down from the top B. 18.8 m down from the top C. 4.7 m down from the top D. 14.1 m down from the top
Mathematics
Write the percent as a decimal.85%
A. 8.5 B. 0.74 C. 0.085 D. 0.85
Mathematics
Find the value for the function.Find -f(x) when f(x) = -3x2 + 4x - 2.
A. -3x2 - 4x + 2 B. 3x2 - 4x - 2 C. -3x2 - 4x - 2 D. 3x2 - 4x + 2
Mathematics
Multiply.390 × 40
A. 15,600 B. 15,610 C. 15,590 D. 15,596
Mathematics