Answer:
18x+9=9y
Step-by-step explanation:
16x+9=9y-2x
+2x +2x
18x+9=9y
The formula A=1/2bh is used to find the area of a triangle. You can find from the diagram that the base of this triangle is 9cm, and the height is 4cm. Plug those numbers into the area of a triangle formula.
A=1/2(9)(4)
Multiply to get 18 square cm, which is choice D.
Answer:
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