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makkiz [27]
3 years ago
10

Please help I don’t understand this and I can’t figure it out.

Mathematics
1 answer:
ryzh [129]3 years ago
7 0
So the groups of angles that make a line (like 130 and i or p a and t) should equal 180. however, the triangles should also equal 180. so in this case for the top row, we know that 130+j=180. since 180-130=50 (i did the inverse of addition, subtraction), j=50. now let’s say for that triangle that your top two angle measures were the 50 we just found and the 70 you have written just as an assumption but i have no clue what you were actually given. since triangles angles must equal 180, 50+70+that angle =180. 50+70=120, so if we do the inverse of 180-120=60, we find out that the bottom angle is 60 degrees.
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Answer:

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Step-by-step explanation:

For one or two angles are complementary angle(s), they have to equal 90°.

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Let x be the other angle and y be the angle we are looking for

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Lets look for x first, since one angle is ten less than four times the angle we are looking for or visa versa, we must:

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For an exchange, lets take out the y variable for another x variable:

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Combine like terms and do cross equation :

x + 4x -10 = 90

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Add 10 to both sides:

5x = 100

100/5 = 20

So <u><em>x=20</em></u>

<u><em></em></u>

Now for y which is what we are looking for,

y = 4x - 10

Since x is 20, plug it in

y = 80 - 10

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Step-by-step explanation:

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<em>Comment on the question</em>

We cannot see the model Abby has put together so far, so we don't know exactly what it takes to finish it. Any longs or units she already shows must be subtracted from the numbers above.

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