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Help with a simplied expression y=20 triangle height = 2/5y+4 base=1/2y
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y = 20 height = 2/5 *(20+4) = 2/5 * 24 = 48/5 = 9.6 Base = 1/2*20 = 10
the teacher wants an expression?
expression for area ?
a simplified expression for area is all it says
Area = 1/2 base times height
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so half of 10 times 12
area = 1/2 * base * height = 1/2 * 2/5 * (y+4) * 1/2* y area = y*(y+4)/ 10 area = 1/10 * (y^2 +4y) Plug in y = 20 area = 1/10 * (400 + 80) = 1/10 * 480 = 48
which is 60
ill try it
wait - is it 2/5y or (2/5)y?
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its 2/5y
ok so forget my answer
so what do itype as my answer?
Try Rita's
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