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. 8 sec
B. 34 sec
C. 25.5 sec
D. 17 sec


Answer: D

Mathematics

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Write as a percent.0.00403

A. 0.000403% B. 0.0403% C. 0.403% D. 0.2015%

Mathematics

For an election with candidates (A, B, C, D, and E), we have the following preference schedule: Using the method of pairwise comparisons, the winner of the election is

A. A. B. B. C. C. D. D. E. E.

Mathematics

Solve the problem.Use the graph of data items to find the following:a. mean (Round to the nearest tenth, if necessary.)b. medianc. moded. range 

A. a. 30 b. 30 c. 40 d. 20 B. a. 30.9 b. 30 c. 30 d. 40 C. a. 30.9 b. 30 c. 30 d. 20 D. a. 30.9 b. 30 c. 40 d. 20

Mathematics

Write the expression in the form a + bi, where a and b are real numbers.

A. -- 3
B. -- i
C. + i
D. -+ i

Mathematics