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3 years ago

Doing test corrections and still have no clue what to do

Mathematics

2 answers:

Mkey [24]3 years ago

7 0

Exterior angle = 180- Interior angle

Exterior angle = 180 - 168 = 12 degrees

So each exterior angle on the polygon is 12 degrees.

Now every polygon has a total of 360 degrees in exterior angles, so how many 12 degree angles fit into 360 degrees.

360/12 = 30 sides :)

nirvana33 [79]3 years ago

6 0

The answer would be 30 sides

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the perimeter of a rectangle brownie pan is 50 Inches. the lenght of the pan is 5 less than twice the width. write a system of e

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Answer: The system of equation is,

2 ( x + y ) = 50

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Step-by-step explanation:

Let x represents the length of the rectangular brownie and y represents the width of the rectangular brownie.

Thus, the perimeter of the brownie = 2 ( x + y )

But, According to the question,

Perimeter of the brownie = 50,

2 ( x + y ) = 50

The length of the brownie is 5 less than twice the width,

That is, x = 2 y - 5

Thus, the required system of equation is,

2 ( x + y ) = 50 , x = 2 y - 5

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Answer:

Follow the steps I did in the explanation.

Step-by-step explanation:

It says to evaluate the equation :-

3.2 = 4/5(b - 5)

3.2 = (4/5 × b) + (4/5 × -5)

3.2 = 4/5b - 4

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