3 years ago

Solve for x, if 2x-5=7

Mathematics

1 answer:

Zigmanuir [339]3 years ago

7 0

2x-5=7
2x=7+5
2x=12
X=12/2
X=6

Hope this helps!

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Vlad1618 [11]

Hello,

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Hope this helps !

Photon

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Use reasoning to solve for the unknown number. five is the quotient of 100 / some number what is the number 5 is the quotient of

Virty [35]

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sweet-ann [11.9K]

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3 years ago

How to find the number of sides of a polygon when given the interior angle sum

wariber [46]

Given:

Sum of interior angle

To find:

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$$S=(n-2) \times 180^{\circ}$

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Divide by 180° on both sides.

$$\frac{S}{180^{\circ}}=\frac{(n-2) \times 180^{\circ}}{180^{\circ}}$

Cancel common factor 180°.

$$\frac{S}{180^{\circ}}=n-2$

Add 2 on both sides.

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Therefore number of sides of a polygon is $n=\frac{sum}{180^{\circ}}+2$ .

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3 years ago