I need homework help! Its proportions, but the thing is, I'm terrible at them. All I know is that is/of=x/100.

Mathematics

1 answer:

masha68 [24]2 years ago

7 0

19) 15/a = 3/2

Start by cross multiplying....

3a = 30

Divide both sides 3

a = 10

21) 2/7 = 4/d

2d = 28

   d= 14

23) 8/p = 3/10

80 = 3p
p = 26.66

25) 2 / -5 = 6/t
  2t = -30

  t = -15

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