The family trip to grandma's consisted of both a train ride and a car ride. the average speed of the train ride was 73 miles per hour, and the average speed of the car ride was 48 miles per hour. the entire trip lasted 10 hours. let x be the number of hours the train ride lasted. write an expression for the total distance of the trip, in miles.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

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to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.