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jek_recluse [69]
3 years ago
8

The sum of the angle measures of the polygon is 540°. Write and solve an equation to find the value of x.

Mathematics
1 answer:
leva [86]3 years ago
8 0

Let's set the measure of each angle equal to 540 degrees.

4x + 4x + 5x + 2 + 96 + 5x - 8 = 540

Combine like terms.

18x + 90 = 540

Subtract 90 from both sides.

18x = 450

Divide both sides by 18

x = 25

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Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.
barxatty [35]

Answer:

x=9,-1  and x^2+(-8)x=9

Explanation:

we have been given with the quadratic equation x^2-8x-9

we compare the given quadratic equation with general quadratic equation

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from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant D=b^{2}-4ac

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4 0
3 years ago
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A candidate running for office is putting on a gala as a fundraiser, with hopes of raising more than $7,900 in political contrib
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540r+34s\ \textgreater \ 7,900

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3 0
3 years ago
15% of what number is 90
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Let the number be x 

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3 years ago
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