Respuesta :

Answer:

3.5

Step-by-step explanation:

make an equation out of the ratios -- 10/35 = 1/x

cross multiply -- 10x=35

divide both sides by 10

x=3.5
10:35=1:? which means 10 was divided by 10 so 35 has to be divided by 10 which equals x=3.5

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