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zimovet [89]
3 years ago
9

At what rates did she invest? $1400 invested at ____% $900 invested at ____%

Mathematics
2 answers:
Mars2501 [29]3 years ago
5 0

9514 1404 393

Answer:

  • $1400 at 8%
  • $900 at 10%

Step-by-step explanation:

The 1-year interest is simply the invested amount times the interest rate.

Let r represent the lower interest rate. Then r+0.02 is the higher rate, and the total interest earned is ...

  1400r + 900(r +.02) = 202

  2300r +18 = 202 . . . . . . . . . .simplify

  2300r = 184 . . . . . . . . . .subtract 18

  r = 184/2300 = 0.08 = 8% . . . . . . divide by the coefficient of r

$1400 was invested at 8%.

$900 was invested at 10%.

8090 [49]3 years ago
5 0
$400 invested at 8%
$900 invested at 10%
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Step-by-step explanation:

I hope this helps! :)

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Give to reasons why do you think Sin/excise tax is so high​
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2 years ago
If an arithmetic sequence
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5 0
3 years ago
What is the reactance of a 25 mF capacitor when the applied frequency is 400 Hz?
LuckyWell [14K]

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X_{C}=\frac{1}{2\pi fC}   (1)



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X_{C} is the Reactance in ohms (Ω)

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4 0
3 years ago
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andrey2020 [161]

Answer:

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Step-by-step explanation:

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Hope this helps! :)

5 0
2 years ago
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