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Delvig [45]
3 years ago
13

How does writing equivalent equations help you solve a system of equations?

Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0
Writing equivalent equations help you solve system of equations because it sets it up for being broken down part by part.

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4 0
3 years ago
Determine the missing side of the square.
Gekata [30.6K]

Answer:

The missing side is 9cm.

How I got my answer:

1. Squares have equal sides.

2. The area is 81cm^2, so we have to divide 81 by 9.

81 : 9 = 9cm.

4 0
3 years ago
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MakcuM [25]
<h3>Answer: B. 154 square meters</h3>

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

Work Shown:

C = 44 is the circumference

in general, the circumference of a circle is

C = 2*pi*r

Plug in C = 44 and solve for r.

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--------------------

Now plug this into the formula for the area of a circle

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3 0
3 years ago
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Why do you change the sign when subtracting a negative number?
natulia [17]
This is because minus times minus is equals plus so the sign must change

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3 years ago
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C

Trinomial means three parts
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