Solve using the quadratic formula. If the equation has no real solutions, write "no real-number solutions."8y2 + 26y + 15 = 0

A. - , -
B. - , -
C. , -
D. ,

Answer: B

Mathematics

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Integrate by first changing the form of the integrand.Integrate by first changing the form of the integrand by algebraic division.

A. e^2x - ln(1 + e^2x) + C
B. e^2x - ln(1 + e^2x) + C
C. e^2x ln(1 + e^2x) + C
D. e^2x - + C

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Mathematics

Find the equation of the curve for the given slope and point through which it passes.Slope given by -y/(x + y); passes through (-3, 4)

A. y2 - 2xy = 40 B. y2 + 2xy = -8 C. y2 + 2xy + -8 = 0 D. y2 + xy = 4

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Mathematics

The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 10t - t2, 0 ? t ? 10Find the body's displacement and average velocity for the given time interval.

A. 200 m, 20 m/sec B. 0 m, 0 m/sec C. 200 m, -10 m/sec D. -200 m, -20 m/sec

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Mathematics

Solve.The equation ? = cos-1 (R/Z) gives the phase angle between R and Z in an AC circuit. Find ? if R = 40 ohms and Z = 50 ohms.

A. 36.9° B. 143.1° C. 0.7° D. 53.1°

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Mathematics