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3 years ago

Simplify.(6x−5+4x^2)+(2x−2)

Mathematics

2 answers:

leonid [27]3 years ago

7 0

Combine Like Terms

=6x + −5 + 4 x 2 + 2x + −2

=(4 x 2) + (6x + 2x) + (−5 + −2)

=4 x 2 +8x + −7

Answer - 4 x 2 + 8x + −7

Natasha_Volkova [10]3 years ago

4 0

Answer:

(6x-5+4x2) + (2x-2)

Step-by-step explanation:

what google said

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4 years ago

Peyton is going to invest $440 and leave it in an account for 5 years. Assuming the

PIT_PIT [208]

Answer:

The required interest rate would be of 3.4% a year.

Step-by-step explanation:

The amount of money earned in compound interest, after t years, is given by:

$P(t) = P(0)(1+r)^t$

In which P(0) is the initial investment and r is the interest rate, as a decimal.

Peyton is going to invest $440 and leave it in an account for 5 years.

This means that $P(0) = 440, t = 5$

$P(t) = P(0)(1+r)^t$

$P(t) = 440(1+r)^5$

What interest rate, to the nearest tenth of a percent, would be required in order for Peyton to end up with $520?

This is r for which P(t) = 520. So

$P(t) = 440(1+r)^5$

$(1+r)^5 = \frac{520}{440}$

$\sqrt[5]{(1+r)^5} = \sqrt[5]{\frac{52}{44}}$

$1 + r = (\frac{52}{44})^{\frac{1}{5}}$

$1 + r = 1.034$

Then

$r = 1.034 - 1 = 0.034$

The required interest rate would be of 3.4% a year.

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3 years ago