Abag contains 6 red marbles, 2 white marbles, and 1 gray marble. you randomly pick out a marble record it's color, and put it back in the bag. you repeat this process for 45 times. how many white or gray marbles do you expect to get and show me why

You would expect 5. There is one grey marble out of the 9 in total; that can be expressed as 1/9. Since you've repeated it 45 times, it would have been 1/9 45 times, or 1/9(45). I hope I could help!

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