Patrycia’s overall grade in her physics class is based solely on the average of her scores on 6 unit tests. the grade she received on the first 5 tests are as follows: 89, 93, 95, 92, 90. what grade does patrycia need to earn on her 6th unit test to end up with a 90% in the class?

the answer is 81%

Step-by-step explanation:I just did the test

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc