Answer:
![-4x+2](https://tex.z-dn.net/?f=-4x%2B2)
Step-by-step explanation:
STEP 1: Subtract 11x from 7x.
STEP 2: Subtract 10 from 12.
You must calculate the length of the segments.
Suppose segments AB and CD
Being A (m, n), B (p, q) C(r,s) and D(t,u)
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They are congruent if:
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![\boxed{(p-m)^2+(q-n)^2=(t-r)^2+(u-s)^2}](https://tex.z-dn.net/?f=%5Cboxed%7B%28p-m%29%5E2%2B%28q-n%29%5E2%3D%28t-r%29%5E2%2B%28u-s%29%5E2%7D)
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Answer:
Step-by-step explanation:
This is an equation for which you need to solve for the value of the missing angle beta.
![cos\beta =sin(15)](https://tex.z-dn.net/?f=cos%5Cbeta%20%3Dsin%2815%29)
sin(15) has a decimal answer that you will find on your calculator. Finding that value makes this equation then
cosβ = .2588190451
Now use the 2nd button and then the cos button to find the angle that has a cos of that decimal. When you hit 2nd then cos, you should see this on your screen:
cos⁻¹ (
After that open parenthesis, enter you decimal then hit the enter button to find the angle. You should get 75, which is Choice B.
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