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mart [117]
3 years ago
13

I can't figure out this answer, can someone help?

Mathematics
1 answer:
raketka [301]3 years ago
8 0
To solve this problem, we need to know that the adjacent interior angles (2 and 5,  or 3 and 4) between two parallel lines are supplementary.
This means that ∠2+∠5 = 180 °

which means 
x+50 + 4x+30 = 180
collect similar terms and solve
5x + 80 = 180
5x = 180-80 = 100
x=20 °

∠2 = x+50 = 20+50 = 70 °

But ∠ 1 = ∠ 2  (vertical angles)
therefore
∠ 1 = 70 °

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topjm [15]
It’s D


the reason why is because the multiplier must be between 1 and 10
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so first more your decimal there which you get:
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then just count how many numbers the decimal jumped, if the decimal moved left the exponent is positive and if it moved right, as in your number, the exponent is negative

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6 0
1 year ago
If θ is a first-quadrant angle in standard position with P(u, v) = (3, 4), evaluate cos 2 θ . -7/25 -1/5 7/25
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Answer:

-7/25.

Step-by-step explanation:

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6 0
3 years ago
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It is a i hope that help
5 0
3 years ago
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Vadim26 [7]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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Volgvan
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