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Vlada [557]
3 years ago
14

Solve (answer please) n-8+n=1-4n

Mathematics
2 answers:
Andrej [43]3 years ago
7 0
N-8+n=1-4n
2n-8=1-4n
2n+4n=1+8
6n=9
n=9/6
n=3/2
STALIN [3.7K]3 years ago
6 0
n-8+n=1-4n\\\\2n-8=1-4n\ \ \ \ \ |add\ 8\ to\ both\ sides\\\\2n=9-4n\ \ \ \ \ |add\ 4n\ to\ both\ sides\\\\6n=9\ \ \ \ \ \ |divide\ both\ sides\ by\ 6\\\\n=\frac{9}{6}\ \ \ \ \ |divide\ a\ numerator\ and\ a\ denominator\ by\ 3\\\\n=\frac{3}{2}\\\\\boxed{n=1\frac{1}{2}}
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pantera1 [17]

Answer:

3.5%

Step-by-step explanation:

1. calculate starting total

6750 + 4210=10960

starting amount = $10,960

2. calculate stock    A2's value

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to make the percentage usable in this equation we need to divide it by 100 to get it in decimal form. ⇒ \frac{18}{100} = 0.18

  • multiply stock A1 by perctage decimal to get the amount decreased

6750(0.18)=1215 ($1,215)

  • subtract stock A1 by decreased amount to get stock A2's value

6750-1215=5535

A2 = $5,535

3. calculate stock    B2's value

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to make the percentage usable in this equation we need to divide it by 100 to get it in decimal form. ⇒ \frac{20}{100} = 0.20

  • multiply stock B1 by perctage decimal to get the amount increased

4210(0.20)=842 ($842)

  • add stock B1 with increased amount to get stock B2's value

4210+842=5052

B2 = $5,052

4. get new amount of account

5052+5535=10587

new amount = $10,587

5. find percentage decrease of starting amount to new amount

  • divide starting amount by the new amount

\frac{10960}{10587} = 1.03523188816

  • then subtract by 1

1.03523188816-1 =0.03523188816

  • multiply by 100 to convert to percentage form

0.03523188816(100) =3.523188816

  • and round to <u>nearest tenth</u>

answer is ≈ 3.5%

::: (\_(\ Hope

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