Solve the problem.If two sound sources at the same volume are equidistant from a microphone, the pressure on the microphone is given by p = a cos ?1t + a cos ?2twhere a, ?1, ?2 are constants and t is time. Write p as a product of cosine functions.
What will be an ideal response?
p = 2a cos (
t) cos (
t)
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Parker Posie wants to determine how much she must deposit today at 14% interest to provide four withdrawals of $26,000 at the end of each year, beginning five years from now. This is an example of the present value of
A. an ordinary annuity. B. an annuity due. C. a compound annuity due. D. a deferred ordinary annuity.
Decide whether the statement makes sense. Explain your reasoning.We will never be able to send our daughter to college. In order to have $100,000 in 20 years we would have to save at least $500 each month, That's more than we can afford.
What will be an ideal response?
Decide whether the statement makes sense. Explain your reasoning.Maria saved $750 in taxes after donating $3000 to charity. So Maria's sister also donated $3000 to charity thinking that she would save $750 but she only saved $450.
What will be an ideal response?
Solve. Clear decimals first.10.5t + 84 = 4.5t + 36
A. -32 B. -8 C. 32 D. 8