Solve.
= 13
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (3t sin t + 3 cos t)i + (3 t cos t - 3 sin t)j ; -4 ? t ? 7
A. 49.5 B. 99 C. 195 D. 97.5
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Solve the equation in the interval [0°, 360°). Give solutions to the nearest tenth, if necessary.4 sin2? = 3
A. {60°, 120°} B. {60°, 120°, 240°, 300°} C. {240°, 300°} D. ?
Mathematics
Find the inverse of the invertible matrix.
A. 
B. 
C. 
D. 
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Factor the polynomial f(x). Then solve the equation f(x) = 0.f(x) = x3 + 2x2 - 23x - 60
A. (x - 3)(x - 4)(x + 5) ; -3, -4, 5 B. (x + 3)(x + 4)(x - 7) ; -3, -4, 7 C. (x + 3)(x + 4)(x - 5) ; 3, 4, -5 D. (x + 3)(x + 4)(x - 5) ; -3, -4, 5
Mathematics