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satela [25.4K]
2 years ago
8

I need help with this, please!

Mathematics
1 answer:
pentagon [3]2 years ago
3 0

Answer:g(x)=-x/2-6

Step-by-step explanation:plug it in

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HELPPPPPPPPPPP! PLEASE ILL GIVE 20 POINTS AND BRAINLIEST!
meriva

Explanation:

The perimeter of the track is the two circumferences of the semicircles (when combined, they form one circle, so we can just find the circumference of the circle) added to the lengths of the rectangle (

160

meters).

To find the circumference of the circle, we need to know the diameter.

Circumference of a circle:

d

π

or

2

r

π

, where

d

represents diameter and

r

represents radius

The diameter of the circle happens to be the same as the width of the rectangle. We know that the area of a rectangle is found by multiplying its length by its width. We know that the area is

14400

and that its length is

160

.

Width: area divided by length

14400

160

=

90

The diameter of the circle and the width of the rectangle is

90

meters.

Circumference:

90

⋅

π

=

90

π

→

If you are using an approximation such as 3.14 for

π

, multiply that by 90

Add

160

⋅

2

to the circumference since the lengths of the rectangle are also part of the perimeter.

160

⋅

2

=

320

90

π

+

320

i hope it helps you ok please mark ❣️ me as brainlist

8 0
1 year ago
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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5 0
3 years ago
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