Classify the following triangle. Check all that apply.

isosceles

Step-by-step explanation:

right is not listed and only two sides/angles are equal therefore making it an isosceles

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

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.