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3 years ago

(x-2)(x+8)=0 Solve for x

Mathematics

2 answers:

sesenic [268]3 years ago

8 0

X - 2 = 0
x + 8 = 0

1. Add 2 to both sides to isolate x.
2. Subtract 8 to both sides to isolate x.

x = 2
x = -8

Lapatulllka [165]3 years ago

5 0

X - 2 = 0
X + 8 = 0

X= 2
X= -8

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Read 2 more answers

Douglas invests money in two simple interest accounts. He invests three times as much in an account paying 14% as he does in an

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Let x represent the amount invested in the account paying 14% interest.

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He invests three times as much in an account paying 14% as he does in an account paying 5%

Which means,

x = 3y

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$S.I = \frac{p \times n \times r}{100}$

Where,

"p" is the principal

"n" is the number of years

"r" is the rate of interest

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Therefore,

Combined S.I = 152.75

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Considering the account earning 14% interest:

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Considering the account earning 5% interest:

$S.I = \frac{y \times 5 \times 1}{100}\\\\S.I = 0.05y$

Since, Combined S.I = 152.75

Therefore,

0.42y + 0.05y = 152.75

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Divide both sides by 0.47

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x = 3(325)

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how much did he invest altogether?

Amount invested together = x + y = 975 + 325 = 1300

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