Perform the indicated operation. Simplify if possible.
+ 
A. 
B. - 
C. 0
D. 
Answer: C
Mathematics
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Solve the problem.To find the speed of a free-falling skydiver we use the formula s = v - 32t, where s is the speed of the skydiver, v is the initial velocity, and t is the time since the start of the free fall. Find the speed of a skydiver at time t = 2 seconds if her initial downward velocity (v) is -8 feet per second.
A. -72 ft/sec B. -56 ft/sec C. 258 ft/sec D. -64 ft/sec
Mathematics
Write as a percent.
A. 40% B. 4% C. 0.4% D. 0.04%
Mathematics
Round the whole number to the given place value.377,495 to the nearest hundred
A. 377,000 B. 378,000 C. 377,400 D. 377,500
Mathematics
Given matrix A, find the indicated cofactor.Find A21.A = 
A. -1 B. -3 C. 1 D. 3
Mathematics