This is the isosceles triangle. Therefore, the angles at the base are congruent.
We know that the sum of the measures of the angles in a triangle is 180°.
Therefore we have the equation:

<em>subtract 38 from both sides</em>
<em>divide both sides by 2</em>

<h3>Answer: x = 71.</h3>
(4*7/2)+(15*7)+(7*6/2) = 140
30 divided by 3. Their are 3 sets of ten by 30 positives
Answer:
B. 1.8, 2.4, 3
Step-by-step explanation:
You can make use of pythagore to prove each of the given options and you'll see that B is the correct answer:
A)
B) 
C)
D)