Multiply.(10) (20) (400)
A. 79,800
B. 80,100
C. 79,900
D. 80,000
Answer: D
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Find dy/dt.y = cos4(?t - 11)
A. 4 cos3(?t - 11) B. -4? sin3(?t - 11) C. -4 cos3(?t - 11) sin(?t - 11) D. -4? cos3(?t - 11) sin(?t - 11)
Simplify by writing the expression with positive exponents. Assume that all variables represent nonzero real numbers.
A. 3
B. 
C. 
D. 
Solve the rational inequality. Write the solution set in interval notation.
< 0
A. (-?, ?) B. (-?, -4) C. ? D. (-4, 0)
Solve the problem.A motorcycle and a car leave an intersection at the same time. The motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. Find an expression for their distance apart in miles at the end of t hours.
A. 2t
miles
B. t
miles
C. 52
miles
D. 52t miles