Show that the ratios 10/20 and 30/60 from a proportion by finding a common multiplayer. show that the ratios are equal by writing them in simplest form.

5 can go into 10 and 20 so you just want to divide them by five which gives you 
2/4.

its still not simplified yet so 2 can go in to 2 and 4 so we divide them your answer should be 1/2

so your simplified answer for 10/20 is 1/2

so 10/20=1/2

same thing for 30/60

10 can go into 30 and 60 so we divide them by 10

you should get 3/6

its still not simplified 

3 can go into 3/6 so we divide them by 3

you should get 1/2

 so 30/60= 1/2

10/20 = 1/2. 

30/60 = 1/2

so your simplified answer for both of them is 1/2

I hope this helped!

i = 2 / - 5

step-by-step explanation:

evaluation of ( 2 - 4 ) ( p + q ) when p = 2 and q = 5 i, by putting values of p and q,                                                                    

0 = ( 2 - 4 ) ( p + q )0 = ( 2 - 4 ) ( 2 + 5 i ),   by multiplying these0 = ( 4 + 10 i - 8 - 20 i )0 = 4 - 8 + 10 i - 20 i0 = - 4 -10 i   0 = 2 ( - 2 - 5 i )0 / 2 = - 2 - 5 i- 2 - 5 i = 0- 5 i = 2i = 2 / - 5