Answer:12
Step-by-step explanation:
The prime factorization of 84 is 2×2×3×7 . The prime factorization of 48 is 2×2×2×2×3 . . Therefore, the GCF is 2×2×3=12
90 degrees
Each angle of a rectangle equals 90 degrees.

a parallel line to that one above, will have the same exact slope, since parallel lines have the same slope.
Answer:

Step-by-step explanation:
times in the y+9 and y+7 and get y squared + 16x+ 63+80.
PEMDAS
do parentheses first
4 x 10=40
40 x 10=400