You use distributive property. So (5 x 2)-(5 x x)= 10 - 5x.
we know that
The sum of the internal angles in the triangle must be
degrees
see the attached figure with letters to better understand the problem
Step ![1](https://tex.z-dn.net/?f=1)
<u>Find the measure of the angle x</u>
In the triangle ABC
![63\°+36\°+x\°=180\°](https://tex.z-dn.net/?f=63%5C%C2%B0%2B36%5C%C2%B0%2Bx%5C%C2%B0%3D180%5C%C2%B0)
solve for x
![99\°+x\°=180\°](https://tex.z-dn.net/?f=99%5C%C2%B0%2Bx%5C%C2%B0%3D180%5C%C2%B0)
![x\°=180\°-99\°](https://tex.z-dn.net/?f=x%5C%C2%B0%3D180%5C%C2%B0-99%5C%C2%B0)
![x=81\°](https://tex.z-dn.net/?f=x%3D81%5C%C2%B0)
therefore
<u>the answer Part a) is</u>
the measure of angle x is ![81\°](https://tex.z-dn.net/?f=81%5C%C2%B0)
Step ![2](https://tex.z-dn.net/?f=2)
<u>Find the measure of the angle z</u>
we know that
--------> by supplementary angles
substitute the value of x
![81\°+z=180\°](https://tex.z-dn.net/?f=81%5C%C2%B0%2Bz%3D180%5C%C2%B0)
![z=180\°-81\°](https://tex.z-dn.net/?f=z%3D180%5C%C2%B0-81%5C%C2%B0)
![z=99\°](https://tex.z-dn.net/?f=z%3D99%5C%C2%B0)
therefore
<u>the answer Part b) is</u>
the measure of angle z is ![99\°](https://tex.z-dn.net/?f=99%5C%C2%B0)
Step ![3](https://tex.z-dn.net/?f=3)
<u>Find the measure of the angle y</u>
In the triangle ACD
![13\°+z\°+y\°=180\°](https://tex.z-dn.net/?f=13%5C%C2%B0%2Bz%5C%C2%B0%2By%5C%C2%B0%3D180%5C%C2%B0)
solve for y
![13\°+99\°+y\°=180\°](https://tex.z-dn.net/?f=13%5C%C2%B0%2B99%5C%C2%B0%2By%5C%C2%B0%3D180%5C%C2%B0)
![112\°+y\°=180\°](https://tex.z-dn.net/?f=112%5C%C2%B0%2By%5C%C2%B0%3D180%5C%C2%B0)
![y\°=180\°-112\°](https://tex.z-dn.net/?f=y%5C%C2%B0%3D180%5C%C2%B0-112%5C%C2%B0)
![y\°=68\°](https://tex.z-dn.net/?f=y%5C%C2%B0%3D68%5C%C2%B0)
therefore
<u>the answer Part c) is</u>
the measure of angle y is ![68\°](https://tex.z-dn.net/?f=68%5C%C2%B0)
Answer:
there is no picture
Step-by-step explanation:
Answer:
i think the answer would be 7 8/9
Step-by-step explanation: