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3 years ago

I need help with this one question 8r - 5q = 3 solve for q how do i go about this

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

6 0

8r - 3 = 5q --> q = (8r - 3)/5

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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 ,

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

8 0

2 years ago

A class quiz has 5 true or false questions the correct answers are t,t,f,f,

raketka [301]

I’m not sure what you are trying to say in this problem?

8 0

2 years ago

Evaluate 2^5/2^2 i need some help lol

seraphim [82]

2^5/2^2 = 2^(5-2)
= 2^3
= 8

8 0

3 years ago

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(7-4) + 17 / -14 + 2 x 5

Yuliya22 [10]

Answer:

165/14

Step-by-step explanation:

(7-4) + 17 / -14 + 2 x 5

3 + 17/-14 + 2 x 5

3 - 17/14 + 2 x 5

3 - 17/14 + 10

165/14

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3 years ago

Which of the following is equivalent to 2:1

Len [333]

Answer:

use m a t h w a y

Step-by-step explanation:

put it all together and they will give you opitions

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3 years ago

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