Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height?
A. 6 sec
B. 18 sec
C. 24 sec
D. 12 sec
Answer: D
Mathematics
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Solve the problem.Find the length of the segment of the curve y = 
cosh 2x from x = 0 to x = ln 
.
A. 
B. 2
C. 
D. 
Mathematics
Change the order of integration and evaluate the integral.
A. 
?2
B. 42?2
C. 
?2
D. 28?2
Mathematics
Multiply in the indicated base.
A. 3435nine B. 3445nine C. 3343nine D. 3345nine
Mathematics
Refer to the figure to answer the question. Line DH is parallel to line IM. Line BO is perpendicular to line DH.
m?IJN is 53°. m?IJN = m?PLM. What is the measure of ?KLP?
A. Cannot be determined B. 53° C. 37° D. 127°
Mathematics