Express the function as a sinusoid of the form y = a sin (bx + c).y = 3 sin x + 7 cos x
A. y = 58 sin 
B. y = 
sin 
C. y = 10 sin (3x + 7)
D. y = 
sin 
Answer: B
Mathematics
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Find the magnitude.Let u = 
. Find the magnitude (length) of the vector: -4u.
A. -20
B. 100
C. -20
D. 20
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Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 - 
x = -1
A. -1.5 B. 1.5 C. 0.086, 2.914 D. ± 0.667
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Find the probability.What is the probability that 20 rolls of a fair die will show 8 threes? Round to the nearest ten-thousandth.
A. 0.0017 B. 0.0168 C. 0.0084 D. 0.0042
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Write the whole number in standard form.8000 + 70
A. 80,700 B. 70,800 C. 8070 D. 7080
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