João has 7 apples if he gives joana 3 and matilde 4 how many did he have?
1 answer:
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Autumn got a 20% reward of the $900 she found.
Answer:
Step-by-step explanation:
let x and y be length and width of rectangle.
Perimeter=2(x+y)
area=xy
2(x+y)=1/2 xy
4(x+y)=xy
4x+4y=xy
x y-4y=4 x
y(x-4)=4 x