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lina2011 [118]
3 years ago
6

See attached photo. Please Help ASAP and Explain

Mathematics
1 answer:
nignag [31]3 years ago
3 0
(sinx)^2 = 1 when cosx is 0 at pi/2 and 3pi/2
cosx = 1 when sinx is 0 at 0

therefore, A
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Stephanie borrowed $12,000 at a 5% interest rate for 8 years. what was the interest?
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Malorie took out a loan to build a deck.The loan was for $15000 and had a 7.5% simple interest rate. If she paid a total of $1,6
attashe74 [19]

Answer:

  • The final value (FV)  that is paid in a loan (which is the sum of the capital and the interests) equals the present value (PV) of the loan  multiplied by (1+i\times{n}), in a simple interest context, where "n" equals the periods of time and "i" equals the interest rate valid for that periodicity.
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  • We should clear "n" from our equation, which means: 16,687.5=15,000\times(1+n\times0.075). Dividing both sides by 15,000, then subtracting 1 both sides, and finally dividing by 0.075 both sides, results in n=1.5.
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3 0
3 years ago
Sean’s age and Helen’s age are in the ratio of 3:5. Two years ago, Helen was twice as old as Sean was then. Find their present a
PolarNik [594]
Lets Sean's age be x
Helen's age by y
x/y=3/5
x=3/5y

Second equation
2(x-2)=y-2

on solving u get Helen as 10 and Sean as 6
3 0
3 years ago
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