I think that it would be A
If vertex angle is 42, and the base angles are congruent, this is an isosceles triangle, they each measure: 180-42/2. They each measure 69 degrees. The length of sides don't matter.
Answer:
= because 3 quarters are equal to 75 cents
To turn a decimal into a percent, multiply it by 100:
5.4 is equal to 540%.