Solve the problem.A projectile is fired with an initial velocity of 450 feet per second at an angle of 70° with the horizontal. In how many seconds will the projectile reach its maximum altitude? (Round your answer to the nearest tenth of a second.)
A. 18 sec
B. 9.8 sec
C. 21.3 sec
D. 13.2 sec
Answer: D
Mathematics
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Find the limit.
A. 
B. -10
C. - 
D. No limit
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Divide.
A. 9x5 + 4x3 + x B. 9x4 + 4x3 + x2 C. 9x4 + 4x2 + x D. 13
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Solve the equation by using the square root property. Simplify all radicals.3x2 = 16
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operation and simplify. Write the result in the form a + bi.(1 + 5i)2
A. -24 + 10i B. 1 + 10i + 25i2 C. 26 + 10i D. -24 + 0i
Mathematics