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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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Round to the near at tenth <br> | 3x + 1 | =22
sdas [7]

Answer:

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Step-by-step explanation:

| 3x + 1 | =22

Absolute value equations have 2 solutions, one positive and one negative

3x+1 = 22                   3x+1 = -22

Subtract 1 from each side

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Divide each side by 3

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6 0
3 years ago
I need help simple explanation if possible
Yuki888 [10]
Answer: X=1

Step-by-step explanation:
The hypotenuse is √2 which means that x²+x²=(√2)² using Pythagoras
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8 0
2 years ago
Please help!!!
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3 0
3 years ago
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