Question

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

Answer 1

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