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Practice Test

In the following exercises, simplify.

766.

81 + 144 81 + 144

767.

169 m 4 n 2 169 m 4 n 2

768.

36 n 13 36 n 13

769.

3 13 + 5 2 + 13 3 13 + 5 2 + 13

770.

5 20 + 2 125 5 20 + 2 125

771.

( 3 6 y ) ( 2 50 y 3 ) ( 3 6 y ) ( 2 50 y 3 )

772.

( 2 5 x ) ( 3 + x ) ( 2 5 x ) ( 3 + x )

773.

( 1 2 q ) 2 ( 1 2 q ) 2

774.


a124a124
b213b213

775.


81x12481x124
64y18664y186

776.

64 r 12 25 r 6 64 r 12 25 r 6

777.

14 y 3 7 y 14 y 3 7 y

778.

256 x 7 5 4 x 2 5 256 x 7 5 4 x 2 5

779.

512 4 2 32 4 512 4 2 32 4

780.


2561425614
2431524315

781.

49 3 2 49 3 2

782.

25 5 2 25 5 2

783.

w 3 4 w 7 4 w 3 4 w 7 4

784.

( 27 s 3 5 ) 1 3 ( 27 s 3 5 ) 1 3

In the following exercises, rationalize the denominator.

785.

3 2 6 3 2 6

786.

3 x + 5 3 x + 5

In the following exercises, solve.

787.

3 2 x 3 20 = 7 3 2 x 3 20 = 7

788.

3 u 2 = 5 u + 1 3 u 2 = 5 u + 1

In the following exercise, solve.

789.

A helicopter flying at an altitude of 600 feet dropped a package to a lifeboat. Use the formula t=h4t=h4 to find how many seconds it took for the package to reach the hiker. Round your answer to the nearest tenth of a second.

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