How do we calculate qs? given that sqt and rpt are similar. you

since they are similar RT is similar to ST and PR is similar to QS

find the ratios

7/6 = x/9 cross multiply 7*9 =63

63/6 = 10.5

 so QS = 10.5

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

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step-by-step explanation: