Question

Help with a simplied expression

y=20
triangle height = 2/5y+4
base=1/2y

Answer 1

y = 20
height = 2/5 *(20+4) = 2/5 * 24 = 48/5 = 9.6
Base = 1/2*20 = 10

Answer 2

the teacher wants an expression?

Answer 3

expression for area ?

Answer 4

a simplified expression for area is all it says

Answer 5

Area = 1/2 base times height

Answer 6

so half of 10 times 12

Answer 7

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

Answer 8

which is 60

Answer 9

ill try it

Answer 10

wait - is it 2/5y or (2/5)y?

Answer 11

its 2/5y

Answer 12

ok so forget my answer

Answer 13

so what do itype as my answer?

Answer 14

Try Rita's

Answer 15

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