Answer: 20
Step-by-step explanation: They are both equal to each other, so 3x+50=6x-10. Then just solve for x by canceling out both sides.
Remember that if in a triangle

°and

, we can form two tingles.
In our case:

,

, and c=b.
To determine how many triangles we can form with the given measures, we are going to find the value of

first:

Now, lets check if that value satisfy the inequality

:
Our triangle satisfies the inequality; therefore, we can conclude that we can form two triangles with the given measures.
∠A and ∠B are corresponding angles, which means they have the angle measure. Since you know this you can put A and B into an equation and isolate x.
7x + 40 = 3x + 112
7x - 3x = 112 - 40
4x = 72
x = 72/4
x = 18
Now that you know what x is, you can find the angle for ∠A.
7x + 40
= 7(18) + 40
= 126 + 40
= 166°
Therefore, ∠A is 166°
3.495 is written in fraction as 395/100 and in simplest form as 79/20 and in mixed fraction as (3)19/30
P.S: it is 3 whole
hope this helps :)