Simplify the expression.4 sin 2x cos 2x
A. 2 sin 4x
B. cos 8x
C. cos 4x
D. 
sin 16x
Answer: A
Mathematics
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Solve the problem.Find the volume that remains after a hole of radius 1 is bored through the center of a solid sphere of radius 3. Round to the nearest tenth.
A. 30.2 B. 284.3 C. 94.8 D. 23.7
Mathematics
Solve the problem.Ron can mow the lawn in two hours more time than Paul. Working together they can mow the lawn in 7 hours. How long does it take each of them working alone? Round your answers to the nearest tenth of an hour, if necessary.
A. Paul: 15.1 hr Ron: 13.1 hr B. Paul: 16 hr Ron: 12 hr C. Paul: 12 hr Ron: 16 hr D. Paul: 13.1 hr Ron: 15.1 hr
Mathematics
Find the slope of the line.x = 4
A. 0 B. undefined C. -4 D. 4
Mathematics
Add or subtract.
+ 6
+ 7
A. 13
B. 74
C. 74
D. 13
Mathematics