3 years ago

What type of number is 90.65i?

Mathematics

1 answer:

Alex17521 [72]3 years ago

7 0

Answer:

Imaginary

Step-by-step explanation:

Any number with an i is an imaginary number.

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The simple interest I on an investment of P dollars at an interest rate r for t years is given by I=Prt. Find the time it would

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we know that

$I=Prt$

where

I is the amount in interest

P is the investment

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t is the time in years

Solve for t

$t=I/(Pr)$

we have

$I=\$1,400\\ P=\$27,000\\ r=4.2\%=0.042$

substitute

$t=1,400/(27,000*0.042)=1.23\ years$

therefore

the answer is

$1.23\ years$

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