A tennis club has 27 members. 19 have black hair, 14 have brown eyes, and 11 have both black hair and brown eyes. Find the number of members with
black hair or brown eyes.
O 3
O 5
8
O 11

11

Because if you minus 11 from both brown eyes and black hair your left with 8 from black hair and 3 from brown eyes

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

answer is

b.

11

hope you get this one right.