Answer:
y=5m-3
Step-by-step explanation:
Answer: 15
Step-by-step explanation:
By the trapezoid midsegment theorem,

Answer:
Step-by-step explanation:
Answer:
a) -12
b) 8+11x+11b-3x^2-3b^2-6xb
c)-52
Step-by-step explanation:
in a) we have to substitute the value of x with 5
in b) we substitute the value of x with (x+b) and then simplify
in c) just have to substitute x with -3