Because it is an isosceles triangle, the two base angles have to be the same, so
36°+36°=72°
angles in all triangles add up to 180°, so
180°-72°=108°
unknown=108°
Answer:
what exactly are you asking?
I am very good at math so I can help you but I dont understand the question you are asking, I need more information.
Step-by-step explanation:
Hey there, Lets solve this problem together.
The First step is to line up the numbers.
<span>We calculate </span>

<span>the result of which is </span>

<span>
</span>
<span>We calculate </span>

<span> the result of which is </span>

<span>.
</span>
Since we get a negative number in the next column, we must take 1 from the next column and carry it over to this column. Now the number will be changed to 10.
We calculate

, and the result is

.
<span>We calculate </span>

<span> the result of which is</span>

<span>.
</span>
Therefore,
Answer:
<h3>
BC = 29</h3>
Step-by-step explanation:
Point B is between A and C and the points A, B, and C are collinear so:
AB + BC = AC
487 + 5x + 8x + 709 = 91
13x + 1196 = 91
- 1196 - 1196
13x = - 1105
÷13 ÷13
x = - 85
BC = 8x + 709 = 8(-85) + 709 = - 680 + 709 = 29