Solve the problem.A construction crane lifts a bucket of sand originally weighing 
at a constant rate. Sand is lost from the bucket at a constant rate of
. How much work is done in lifting the sand 
? (Neglect the weight of the bucket.)
A. 11,200 ft ? lb
B. 8000 ft ? lb
C. 12,800 ft ? lb
D. 9600 ft ? lb
Answer: D
Mathematics
You might also like to view...
Solve the problem.Suppose the current cost of gasoline is $3.07 per gallon. Find the current price index using the 1975 price as the reference value. In 1975, the cost of gasoline was 56.7 cents per gallon.
A. 250.3 B. 5.4 C. 541.4 D. 18.5
Mathematics
Solve the equation.4x + 2(-3x - 2) = 3 - 9x
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression by combining like terms.8ab + 9ab - 34ab
A. 
ab
B. 17ab
C. 
a2b2
D. 17a2b2
Mathematics
Solve the right triangle for all missing sides and angles to the nearest tenth.
c = 32.5B = 15.8°
A. A = 74.2°, a = 119.4, b = 33.8 B. A = 74.2°, a = 31.3, b = 8.8 C. A = 74.2°, a = 33.8, b = 119.4 D. A = 74.2°, a = 114.9, b = 119.4
Mathematics