Simplify the radical expression. Assume all variables represent nonnegative real numbers.

A. -7
B. 19
C. 7
D. 49


Answer: A

Mathematics

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A. 388.8 km B. 435.7 km C. 657.6 km D. 255.2 km

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Find the unknown number in the proportion. Write your answer as a whole number or a mixed number if possible. = 

A. x = 
B. x = 20
C. x = 1
D. x = 1

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Use the square root property to solve the equation.(x + 2)2 = 15

A. 2 - , 2 + 
B. 13
C. -2 - , -2 + 
D. - 

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Solve.If 2 ft 2 in. of material is used to manufacture one scarf, how much material is needed for 9 scarves?

A. 23 ft 4 in. B. 16 ft 10 in. C. 18 ft 2 in. D. 19 ft 6 in.

Mathematics