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ser-zykov [4K]
3 years ago
8

Home heating oil is sold by the gallon. Last winter the romano family used 370 gallons of oil at a price of $3.91 per gallon. If

the price increases 9% next year, what will their approximate heating expense be?
Mathematics
1 answer:
shusha [124]3 years ago
6 0
($3.91)(0.09) = $0.3519

$3.91 + 0.3519 = $4.2619 per gallon

if you're looking for the total expense next year:

($4.2619)(370 gallons) = $1,576.903
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3 0
3 years ago
A student makes a ​$10.50 purchase at the bookstore with a​ $20 bill. The store has no bills and gives the change in quarters an
Leviafan [203]

Answer: he collected 22 quarters and 8 fifty-cent pieces

Step-by-step explanation:

Given;

The total amount of money he is to collect is;

A = 20 - 10.50 = $9.50

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Then the number of fifty-cent pieces he collected will be; 30-x

Therefore we can represent it with the equation below;

0.25x + 0.50(30-x) = 9.50

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3 0
4 years ago
1 2 3 4 5 6 7 8 9 10
swat32

Using the conversion of exponent to power, the equivalent expression is given as follows:

\frac{\sqrt{x}}{\sqrt[4]{y}z^2}

<h3>How to transform an exponent to a power?</h3>

It happens according to the following rule, with the denominator as the root and the numerator as the exponent:

a^{\frac{n}{m}} = \sqrt[m]{a^n}

In this problem, we are given the following expression:

x^{\frac{1}{2}}y^{-\frac{1}{4}}z^{-2}

Negative exponents go to the denominator, hence the <em>equivalent expression</em> is given by:

\frac{\sqrt{x}}{\sqrt[4]{y}z^2}

More can be learned about the conversion of exponent to power at brainly.com/question/2020414

#SPJ1

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2 years ago
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