Solve for x. Assume that a and b represent positive real numbers.x2 = 4b

A.
B.
C. {2b, -2b}
D.


Answer: D

Mathematics

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Use the graph to estimate the solution to f(x) = g(x).f(x) = 4 log (0.5x), g(x) = 1.2

A. x ? 4.5 B. x ? 4 C. x ? 1 D. x ? 1.2

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Solve the right triangle using the information given. Round answers to two decimal places, if necessary. b = 2, B = 20°; Find a, c, and A.

A. a = 5.49 c = 6.84 A = 70° B. a = 5.49 c = 5.84 A = 80° C. a = 5.49 c = 5.84 A = 70° D. a = 5.49 c = 6.84 A = 80°

Mathematics

Perform the indicated operation. Write the result in standard form.(-4 + 6i) - 5

A. 1 - 6i B. 1 + 6i C. -9 + 6i D. 9 - 6i

Mathematics

Solve the problem.Two tracking stations are on the equator 129 miles apart. A weather balloon is located on a bearing of  from the western station and on a bearing of N23°W from the eastern station. How far is the balloon from the western station? Round to the nearest mile.

A. 114 miles B. 143 miles C. 105 miles D. 134 miles

Mathematics