1. True or false ? b) In an equilateral triangle, every
perpendicular bisector is an axis of symmetry
of the triangle.​

I think

I hope it helps

have a great day

♧Captaingenius♧

your answer would be b

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.