3 years ago

What does 10+10 equal

Mathematics

1 answer:

Ratling [72]3 years ago

4 0

Answer:

20 is the answer for the question

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An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

Sum of exterior angles of a regular polygon = 360

Given 1 exterior angle of the regular polygon is 40

Therefore ,

$n \times 40 = 360\\\\n = \frac{360}{40} \\\\n = 9$

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3 years ago

The temperature in Minneapolis, Minnesota, at 4 P.M. was 15°F. By midnight, the temperature had deceased by 18°. What was the te

Sholpan [36]

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Step-by-step explanation:

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3 years ago

SLOT

KATRIN_1 [288]

Answer:

Step-by-step explanation:

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5 less than a number y is under 20.

klio [65]

Answer:

y - 5 < 20

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Step-by-step explanation:

y - 5 < 20

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dybincka [34]

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unbias

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Not asking specific group or person.

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