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3 years ago

Wait so the sum of interior angles

Mathematics

1 answer:

Amiraneli [1.4K]3 years ago

8 0

<h3>Answer: 1260</h3>

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

Work Shown:

n = number of sides = 9

S = sum of the interior angles of any polygon with n sides

S = 180(n-2)

S = 180(9-2)

S = 180(7)

S = 1260

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Answer:

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Step-by-step explanation:

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3 years ago

Simplify completely quantity 2 x squared plus 13 x plus 20 all over x squared minus 5 x minus 36 .

adoni [48]

Answer:

(2x + 5)/(x - 9)
3. quantity 2 x plus 5 over x minus 9

Step-by-step explanation:

Quantity 2 x squared plus 13 x plus 20 all over x squared minus 5 x minus 36

(2x² + 13x + 20)/(x² -5x - 36) =
(2x²+ 5x + 8x + 20)/(x² - 9x + 4x -36)=
(2x + 5)(x + 4)/(x - 9)(x + 4) =
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3 years ago

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lozanna [386]

Answer:

9 cm

Step-by-step explanation:

$\sqrt[3]{729}$

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3 years ago

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aivan3 [116]

Answer:

x = 7

Step-by-step explanation:

Rearrange the equation to make x the subject.

Original:

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3 years ago

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julia-pushkina [17]

Answer:

The length of side <em>b</em> is 9.

Step-by-step explanation:

Triangles are similar if they have the same shape, but can be different sizes.

When two figures are similar, the ratios of the lengths of their corresponding sides are equal.

If you know that two objects are similar, you can use proportions and cross products to find the length of an unknown side. We know that the triangle $ABC$ is similar to the triangle $XYZ$ . Therefore the following relation must be true:

$\frac{AB}{AC} =\frac{XY}{XZ}$

We know that side $AB$ is equal to 8, side $AC$ is equal to <em>b, </em>side $XY$ is equal to $2\frac{2}{3}$ , and side $XZ$ is equal to 3.

Substituting these values into the above relation and solving for <em>b</em> we get that:

$\frac{8}{b} =\frac{2\frac{2}{3} }{3}\\\\\mathrm{Convert\:mixed\:numbers\:to\:improper\:fractions}:\quad 2\frac{2}{3}=\frac{8}{3}\\\\\frac{8}{b}=\frac{\frac{8}{3}}{3}\\\\8\cdot \:3=b\frac{8}{3}\\\\24=b\frac{8}{3}\\\\8b=72\\\\b=9$

5 0

3 years ago