Answer:
10 1/2
Step-by-step explanation:
You should add the two bases and muliply them with the height and then divide with 2
(14+18)×10÷2=160
Answer: 
Step-by-step explanation:
Move all terms to one side
Simplify
Split the second term
Factor out common terms in the first two terms, then in the last two terms.
Factor out the common term

Answer:
y is equal to 4.
Step-by-step explanation:
To find this, cross multiply and then divide.
10*2 = y*5
20 = 5y
4 = y