Solve the equation. Identify the equation as an identity, an inconsistent equation, or a conditional equation.-20s + 72 + 5(4s - 13) = 0

A. Inconsistent, ?
B. Conditional, ?
C. Identity, {all real numbers}
D. Inconsistent, {all real numbers}


Answer: A

Mathematics

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Perform the indicated operations.(5x + 12y)2

A. 5x2 + 144y2 B. 5x2 + 120xy + 144y2 C. 25x2 + 120xy + 144y2 D. 25x2 + 144y2

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Solve the problem.Find the length of the unknown side of the right triangle, where a and b are the legs and c is the hypotenuse. a = 6, b = 8, c = ?

A. c = 10 B. c = 7 C. c = 9 D. c = 5

Mathematics

Give the focus, directrix, and axis for the parabola.y2 = 4x

A. (0, 1), y = -1, y-axis B. (1, 0), x = -1, x-axis C. (1, 1), x = 1, x-axis D. (1, 0), x = -1, y-axis

Mathematics

Solve by the substitution method.-0.5x - 0.1y = 0.9-0.3x - 0.1y = 0.5

A. {(1.3, 5.5)} B. ? C. {(-2, 1)} D. {(-2.6, 3.3)}

Mathematics