Match the system of inequalities with the appropriate graph.x + 2y ? 2 x - y ? 0

A.

B.

C.

D.


Answer: B

Mathematics

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Evaluate the function.S(x) = 0.7x2 - 4.4x + 2.1; S(-0.3)

A. 0.216 B. 3.483 C. 1.404 D. -3.483

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Find the length of the third side of the right triangle. Assume that c represents the length of the hypotenuse. Give an exact answer and, if appropriate, an approximation to three decimal places.b = 20, c = 25

A. a = 5 B. a = 225 C. a = 45 D. a = 15

Mathematics

Prove that the equation is an identity.ln(cot ?)  = ln(cos ?) + ln(csc ?)

What will be an ideal response?

Mathematics

Find the sum of the arithmetic sequence.(-6) + (-1) + 4 + 9 + ... + 39

A. 165 B. 170 C. 330 D. 160

Mathematics