Answer:
a
Step-by-step explanation:
2/3 bc y2-y1/x2-x1=2/3
Elga's age is 50, and Alvin's age is 56. So, the sum of their ages is 106.
For these kinds of expressions use FOIL (first, outside, inside, last).
-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2
Now combine them all:
-18x^2 + 78xy - 24y^2
Ok, so your answer would be 89.75
Answer:
6m
Step-by-step explanation: