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olga nikolaevna [1]
2 years ago
12

Can someone help me?

Mathematics
2 answers:
Nookie1986 [14]2 years ago
8 0
I believe it’s no solution Ik the answer is 30=-20
Cloud [144]2 years ago
4 0

Answer:

someone can help u

Step-by-step explanation:

stan kim namjoon for help

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Lines l and k are parallel to each other. A=120 degrees. and C=80 degrees. What is the number of degrees in B??
Aleonysh [2.5K]

Answer:

B = 160°

Step-by-step explanation:

This is how I solved it (I hope the explanation isn't too confusing):

Since L and K are parallel, I drew a straight line from A to B. By doing this, I'm making a triangle: ΔABC

Then I solved for the angles of the triangle. First, we are given that ∠C = 80° and ∠A = 120°. Although, when I drew the vertical line from A to B, it made a 90° (see attachment).

So what we basically did was break ∠A into two parts: an angle inside ΔABC and one outside. To find the interior angle, simply subtract 90° from 120° to get 30°.

There are 180° in a triangle, so add the two interior angles you know:

30° + 80° = 110°

Then subtract 110° from 180° to find the final interior angle which is:

180° - 110° = 70°.

To find the measure of angle B, you must add all of the parts together, so the 90° outside angle and the 70° interior angle:

90° + 70° = 160°

5 0
2 years ago
Perimeter of triangle? <br>need some help please!​
pychu [463]
You need to subtract the numbers for 180 and you will have the answer
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2 years ago
Which of the following is not part of the job search preparation checklist
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3 years ago
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Why do you think people who are good at math are usually successful on their jobs?
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2 years ago
Find the common ratio of the sequence -172, -86, -43, -21.5
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Common ratio means that you will be multiplying from the first number to get the second number.
To find the ratio we will work backwards, from right to left, and divide instead of multiply.
-43/-21.5 = 1/2
-86/-43= 1/2
-182/-86 = 1/2
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6 0
2 years ago
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