Step-by-step explanation:
Area of rectangle =height×base
4 1/2×3 3/7=9/2×24/7=216/14=15 6/14=15 3/7
Answer:
f( - 2) = 23
Step-by-step explanation:

Multiplication comes before any subtraction...so do 10 x 5 first
Answer:
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2a because with 18a and 20ab they both have "a" in common and they are even thus multiples of 2 leaving you with 2a(9,10b)