Solve.The difference between two positive integers is 20. One integer is three times as great as the other. Find the integers.

A. 10 and 30
B. 20 and 30
C. 10 and 20
D. 30 and 50


Answer: A

Mathematics

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Solve the problem.After a person stops pedaling a bicycle, the wheel rotates 440 times the first minute. Each subsequent minute, it rotates  as many times as in the previous minute. How many times will the wheel rotate before coming to a complete stop?

A. 660 rotations B. 2200 rotations C. 1320 rotations D. 2640 rotations

Mathematics

Solve.A fire fighter needs to estimate the height of a burning building. She estimates the length of her shadow to be 8 feet long and the length of the building's shadow to be 66 feet long. Find the height of the building if the fire fighter is 5 feet tall.

A. 73.995 ft B. 44 ft C. 110 ft D. 99 ft

Mathematics

Perform the indicated operations and simplify the result. Leave the answer in factored form.

A.
B. (x + 1)(x + 10)
C.
D.  

Mathematics

Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 + x

A. x2 + x +  = 2
B. x2 + x + 36 = (x +6)2
C. x2 + x +  = 2
D. x2 + x +  = 2

Mathematics