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Nimfa-mama [501]
2 years ago
5

PLEASE HELP IM BEGGING Ira B. Scholar, that bizarre math teacher, put the figure at right on a recent test and said,

Mathematics
1 answer:
rewona [7]2 years ago
7 0

Answer:

The perimeter is the distance all the way around the outside of a 2D shape.  To calculate the perimeter, sum the lengths of all the sides.

Therefore, perimeter of the triangle = (2x - 8) + (2x + 5) + (30 - 3x)

Collect like terms:  2x + 2x - 3x - 8 + 5 + 30

Combine like terms:  x + 27

Therefore, perimeter of triangle = x + 27

We are told that the perimeter is 25:

x + 27 = 25

Subtract 27 from both sides: x = -2

If x = -2, then the side with equation 2x - 8 = (2 x -2) - 8 = -12

A length cannot be negative, therefore the perimeter cannot equal 25.

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Step-by-step explanation:

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Factor the expression<br> 20g3 + 24g2 – 15g – 18
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3 years ago
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2 years ago
What is the answer to 4x-5x+9=5x-9?
fiasKO [112]

Answer:

x=3

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3 years ago
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stealth61 [152]

Answer: Filled circle at -1 shading to the left.

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_________

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=  -1

and the < sign means less than or equal to. Hope this helps!

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