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3 years ago

14

How do you do this problem?

2 answers:

lidiya [134]3 years ago

8 0

Y=25+30, so y=55
x=180-55, so x=125
the outside angle is equal to the sum of the two other angles (the ones it is not adjacent to), so y would be 55, and since y and x are supplementary, x would be 125.

zzz [600]3 years ago

4 0

Answer:

x = 125°

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the given angles from 180 for x, that is

x = 180° - (30 + 25)° = 180° - 55° = 125°

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Urgent! Will award brainliest...<br> Factor the following polynomial:<br> <img src="https://tex.z-dn.net/?f=3a%5E%7B2%7D-21a%2B3

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Answer:

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Step-by-step explanation:

The first step is to find the GCF. Here, it's 3.

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Then, you factor the polynomial in the parenthesis.

To find the factors, you will need to find 2 numbers that add to -7, and multiply to 10. -2 and -5 add to -7 and multiply to 10. Now, replace -7a with the factors.

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This of this polynomial as 2 problems.

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Then, factor again.

$a^2-2a$ $-5a+10$

$a(a-2)$ $-5(a-5)$

Then, you keep the factors in parenthesis, and combine the numbers on the outside.

$(a-2)(a-5)(a-5)$

Since, there are 2 of the same factor, you only need one.

$(a-2)(a-5)$

BUT REMEMBER!! In the very beginning, we had a 3 that we took out, we STILL need to add that to the final answer. The <u>final answer</u> is:

$3 (a-2) (a-5)$

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