2 years ago

Please help with these. Show all work. Thanks in advance

Mathematics

1 answer:

Kitty [74]2 years ago

8 0

I can't see the picture..

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Is the formula s=(n-2)180

Phantasy [73]

Answer:

Number of sides of the polygon

Step-by-step explanation:

The formula $S=(n-2)180$ is the sum of the measures of interior angles. So that's what S stands for. The only other variable remaining is n which is the number of sides of the polygon.

There's nothing I can do to help you understand this, you just have to memorize it.

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2 years ago

Find the perimeter. Round to the nearest whole number.<br> 15 is c and 30 is a)

ziro4ka [17]

Answer:

Step-by-step explanation:

Hope this helps.

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3 years ago

The roots of an equation are x = -1 ± i. The equation is x2 + + 2 = 0.

OleMash [197]

Im pretty sure its x=-1

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2 years ago

Correct answer gets 5 stars and brainliest

Katena32 [7]

Answer:

Step-by-step explanation:

C(3 , -2) & D (7, -8)

Distance = $\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$

$CD = \sqrt{(7-3)^{2}+(-8-(-2))^{2}}\\\\=\sqrt{(7-3)^{2}+(-8+2)^{2}}\\\\=\sqrt{(4)^{2}+(-6)^{2}}\\\\=\sqrt{16+36}\\\\=\sqrt{52}\\\\$

≈ 7.2 units

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3 years ago

Divide mentally<br> 270 divide 3=

yanalaym [24]

27/3 = 9 so 270/3 = 90

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3 years ago

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