Find the reference angle for the given angle.240°

A. 30°
B. 60°
C. -60°
D. 45°


Answer: B

Mathematics

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Solve the problem.Find the exponential function f that models this data. Round the coefficients to the nearest hundredth.

A. f(x) = (0.98)(1.33)x B. f(x) = (1.14)(0.85)x C. f(x) = (0.85)(1.14)x D. f(x) = (1.33)(0.98)x

Mathematics

Solve the problem. Do not use a calculator.Find the minimum y-value on the graph of y = 7x2 + 42x + 59

A. -6 B. 0 C. -4 D. -3

Mathematics

Solve the problem.Determine whether the ordered triple (2, 9, -4) is a solution of the system of equations.2x - 5y - 9z = -5 x + y + z = 73x - y + 5z = 35

A. Yes B. No

Mathematics

Perform the indicated operation. Write the answer in scientific notation.

A. 7.38 × 10-1 B. 7.38 × 107  C. 3.69 × 10-1  D. 3.69 × 107 

Mathematics