Select all of the ratios that are equivalent to 1:5 8 to 40 3/20 2/10 6:30 2/9 5 to 20

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Step-by-step explanation:

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answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)