Answer:
it is a right angle
Step-by-step explanation:
so a right angle is 90 degrees so if a b and c looks like a right angle it is a right angle and it is 90 degrees.
9x^2+3x-90
81x+3x-90
84x-90 final answer
$20 i think
Step-by-step explanation: have a good day bye bye yup yup
b and c
