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ehidna [41]
3 years ago
7

A square has a perimeter of 48 inches. If a side length is 3x, write an equation to solve for x​

Mathematics
1 answer:
romanna [79]3 years ago
5 0

Answer:

In a square, all sides are equal. This means that each side is 3x inches in length.

The sum of the sides is 48 inches

There are 4 sides in a square.

3x + 3x + 3x + 3x = 48

<em>12x = 48</em> ----> is the equation

This means that x = 4

Each side is 3x inches in length, hence each side is also 3(4) which is 12 inches or 1 feet.

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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Solve for this equation. x-2/5=1/5
Studentka2010 [4]

Answer:

3/5   or

0.6

Step-by-step explanation:

You could change these fractions to decimals, but you may not be convinced that the answer you get is the same as just using fractions. I'll start by using fractions.

x - 2/5 = 1/5                        Add 2/5 to both sides

x - 2/5 + 2/5 = 1/5 + 2/5     The left side cancels to 0.

x = 1/5 + 2/5                       The denominators (bottom the fraction) are the same. Just add the tops.

x = (1 + 2)/5

x = 3/5

=======================

If you use your calculator to find 2/5 and 1/5, you can get the same answer as 3/5

2

÷

5

=

0.4

By the same method, 1/5 = 0.2

Substitute into the original equation

x - 0.4 = 0.2                       Add 0.4 to both sides

x - 0.4 +0.4 = 0.2 + 0.4    The left side reduces just to x

x = 0.2 +0.4

x = 0.6

If you let your calculator do the work, like this

3

÷

5              

=

0.6

The answers are the same.

7 0
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when u have 2 lines that both have the same slope but different y intercepts, u have parallel lines with no solution because ur lines never intersect.

so ur answer is : no solutions or 0 solutions


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