The student wrote the wrong operation. "The sum of 5y and 3" translates to 5y+3. And here means addition.
If shapes have at least one pair of right angles, they do have one pair of perpendicular sides (True).
I think it’s c cccccccccc
Answer:
x=2
ab=7
bc=5
Step-by-step explanation:
because you do
2x+3 = 4x+3
-3 -3
2x=4x
-2x -2x
x = 2
2x2+3
4+3
=7
4x2-3
8-3
=5
