Solve the problem.If an object is propelled upward from a height of 144 feet at an initial velocity of 128 feet per second, then its height h after t seconds is given by the equation  After how many seconds does the object hit the ground?

A. 11 sec
B. 8.0 sec
C. 4.5 sec
D. 9 sec


Answer: D

Mathematics

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Solve the problem.A ramp leading to the entrance of a building is inclined upward at an angle of 3°. A suitcase is to be pulled up the ramp by a handle that makes an angle of 44° with the horizontal. How much force must be applied in the direction of the handle so that the component of the force parallel to the ramp is 50 lbs.?

A. 37.74 lbs B. 64.69 lbs C. 69.41 lbs D. -49.51 lbs

Mathematics

Express the integrand as a sum of partial fractions and evaluate the integral.

A. -  + 5ln + 3ln + C
B. -8 ln   + 5ln + C
C. -3 ln   + 5ln - 3ln + C
D. -8 ln   + 5ln + 3ln + C

Mathematics

Use the tautology  to write statement in an equivalent form. ? We will not visit New York or visit the Statue of Liberty. ?

A. If we visit New York, then we do not visit the Statue of Liberty. B. If we do not visit New York, then we do not visit the Statue of Liberty. C. If we do not visit New York, then we visit the Statue of Liberty. D. If we visit New York, then we visit the Statue of Liberty.

Mathematics

Solve the equation.8a = -64

A. -8 B. 72 C. -72 D. 1

Mathematics