Solve by extracting square roots.x2 = -64

A. {± i}
B. {± 8}
C. {± 8i}
D. {± 64i}


Answer: C

Mathematics

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Solve the problem. Round results to an appropriate number of significant digits.From a balloon 1185 ft high, the angle of depression to the ranger headquarters is 51°38'. How far is the headquarters from a point on the ground directly below the balloon (to the nearest foot)?

A. 943 ft B. 938 ft C. 933 ft D. 928 ft

Mathematics

Solve the inequality, then graph the solution.-22 ? -3z + 2 ? -7  

A. 3 ? z ? 8  
B. -8 < z < -3  
C. 3 < z < 8  
D. -8 ? z ? -3  

Mathematics

Find the intercepts for the equation.x + y = 6

A. (3, 0); (0, 3) B. (0, 0); (0, 6) C. (6, 0); (0, 6) D. (6, 0); (0, -6)

Mathematics

Perform the indicated operation. - 4

A. -7
B. -15
C. -8
D. -7

Mathematics