Solve the problem.A rescue cable attached to a helicopter weighs 2 lb/ft. A 160-lb man grabs the end of the rope and is pulled from the ocean into the helicopter. How much work is done in lifting the man if the helicopter is 30 ft above the water?
A. 4860 ft ? lb
B. 5700 ft ? lb
C. 1060 ft ? lb
D. 6600 ft ? lb
Answer: B
Mathematics
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Solve.
- 
= 
A. 42 B. 14 C. 28 D. -14
Mathematics
Subtract.10 - (-23)
A. 33 B. 13 C. -13 D. -33
Mathematics
Find the GCD or LCM as indicated.Given 60 and 30, find the GCD.
A. 15 B. 6 C. 10 D. 30
Mathematics
Change the measurements on this scale drawing to decimals and round them to the nearest tenth of an inch. src="https://sciemce.com/media/4/ppg__tttt0618191158__f1q39g6.jpg" style="vertical-align: -17.0px;" /> in. length a is:
A. 4.7 in.
B. 4.4 in.
C. 4.5 in.
D. 4.6 in.
a 4
in. b 
in. c 
in. d 
in. e 2
Mathematics