Find three cube roots for the complex number. Leave your answers in trigonometric form.
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What will be an ideal response?
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Solve the problem.Hannah borrowed $47,838 at 5% simple interest for 15 months. How much will the interest amount to? What is the total amount that she will have to pay back at the end of 15 months? Round answers to the nearest cent if necessary.
A. $2989.88; $50,827.88 B. $2790.55; $50,628.55 C. $3015.00; $50,853.00 D. $3189.20; $51,027.20
Solve the problem.Suppose a life insurance policy costs $16 for the first unit of coverage and then $4 for each additional unit of coverage. Let C(x) be the cost for insurance of x units of coverage. What will 10 units of coverage cost?
A. $56 B. $52 C. $40 D. $24
Use a double-angle identity to find the exact value of the expression.1 - 2 sin2 67.5°
A. - 
B. 
C. - 
D. 
The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.At a recent Phish rock concert, sound intensity reached a level of 0.50 watt per square meter. To the nearest whole number, calculate the loudness of this sound in decibels.
Fill in the blank(s) with the appropriate word(s).