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klemol [59]
3 years ago
12

Find the perimeter of the figure. Show all work (formulas, plugged in values, math calculations) for full credit. PLEASE HELP DO

IN AN HOUR

Mathematics
2 answers:
Yuri [45]3 years ago
5 0

Answer:

104.25 cm

Step-by-step explanation:

Perimeter = three sides + arc

Arc length: ½ × pi × diameter

½ × 3.14 × 25

39.25

Perimeter

39.25 + 20 + 25 + 20

104.25

Aleksandr-060686 [28]3 years ago
4 0

Answer:

Step-by-step explanation:

Semicircle:

diameter  = length of the rectangle = 25 cm

Half circumference = πd/2

= 3.14 * 25/2 = 39.25 cm

Perimeter of the figure = 39.25 + 20 + 25 + 20

= 104.25 cm

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Write a verbal sentence to represent the equation<br> X/4+8=-16
LekaFEV [45]

Answer:

The sum of X divided by 4 and 8 is -16.

Step-by-step explanation:

The main numbers we are adding are X/4 and 8, so those can be referred to as "the sum of". X/4 is simply "X divided by 4".

This all equals -16, so we have:

The sum of X divided by 4 and 8 is -16.

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3 years ago
100 POINTS!!! PLEASE HELP ME
tatuchka [14]

Step-by-step explanation:

For question 30, the first choice is not necessarily true. I attached a picture of what *could* be the parallelogram.

The first choice is true ONLY if the parallelogram is a square.

The second choice is not necessarily true either. It is true ONLY if the parallelogram is a rhombus (a square is also a rhombus, just for reference)

But opposite sides of a parallelogram are always equal

So the answer to question 30 are the first and second choices.

For question 31:

remember what I said about how opposite sides of a parallelogram are always equal? Well opposite angles are also always equal.

So angle BKX = angle BWX = angle XWB = 114 degrees

Angle BKW = angle XWK (using parallel lines) = angle XWB - angle BWK = 114 - 22 = 92 degrees

Angle WBX = angle BXK (using parallel lines too) = angle WXK - angle WXB.

Consecutive angles in a parallelogram add up to 180. So angle WXK + angle XWK = 180. angle WXK = 180 - angle XWK = 180 - 114 = 66 degrees.

angle WDB + angle WBX + angle BWK = 180 because it's a triangle

angle WDB + 66 (just figured it out) + 22 (given) = 180 degrees

angle WDB = 180 - 66 - 22 = 92 degrees

I hope I didn't do anything wrong lol

but I prolly did XD

3 0
3 years ago
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AURORKA [14]

Answer:

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Step-by-step explanation:

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3 years ago
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nadezda [96]

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(1)x²+(1)+ (-2)

Step-by-step explanation:

f(g(x)= f(x-1) = (x-1)²

=x²+1-2

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3 years ago
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Ugo [173]
<u>Solution:</u>

30 - (30*0.80) = 30 - 24 = 6

or you can do

30 * 0.20 = 6
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