at the beginning of the day the stock market goes up 60 1/4 points and stays at this level for most of the day. at the end of the day the stock market goes down 110 1/2 points from the high at the beginning of the day. what is the total change in the stock market from the beginning of the day to the end of the day?

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.