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3 years ago

What is the solution of the system of equations? Explain 18x+15-y=0 5y=90x+12

Mathematics

1 answer:

Alexxandr [17]3 years ago

7 0

Here is your answer. Hope you'll find it helpful. :)

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4-inch by 6-inch what is the width of 15 inches for a ratio table

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This is a ratio problem; the ratio of the length to width is constant (and therefore equal):

4 /6 = 15 / x

Now, with a ratio, we may do any allowable algebra operation: cross-multiply, invert both sides, multiply or divide both sides by the same amount, etc.

Let's cross-multiply:

4x = (15)(6)

x = 90/4

x = 22.5 in.

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kifflom [539]

$\frac{3(x+5)}{2} \cdot 2=21\cdot 2$

Above step we use "Multiplication property of equality"

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In the above step we "Simplify on both sides of equation"

$3x+15 = 42$

In the above step we use "Distribution property"

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The above step is the result of using "Subtraction property of equality"

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Above step is result of "Combining the like terms"

$\frac{3x}{3} =\frac{27}{3}$

Above step is the result of using "Division property of equality"

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Above step is result of "Simplifying fractions on either side of equation"

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There are 26.2 miles in a marathon. Write the number of miles using a fraction.

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improper fraction: 131/5

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