A steel girder weighing 200 lb is hoisted from ground level to the roof of a 40-ft building using a chain that weighs 5 lb/running foot. Find the work done.
a. 4,000 ft-lb
b. 8,100 ft-lb
c. 12,000 ft-lb
d. 8,000 ft-lb
c. 12,000 ft-lb
Mathematics
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Sketch the given surface.y = x2
What will be an ideal response?
Mathematics
Find the equation of the circle from the given information.Center at (-2, -10), radius 12
A. (x + 10)2 + (y + 2)2 = 12 B. (x - 2)2 + (y - 10)2 = 144 C. (x + 2)2 + (y + 10)2 = 144 D. (x - 10)2 + (y - 2)2 = 12
Mathematics
Find the area of the figure. Use 3.14 to approximate ?, if needed.
A. 576.875 sq yd B. 663.385 sq yd C. 439.66 sq yd D. 521.6925 sq yd
Mathematics
Solve the inequality. Express your answer using interval notation.-12 ? -2x - 2 ? -10
A. [4, 5]
B. [-5, -4]
C. (4, 5)
D. (-5, -4)
Mathematics