The number of pedestrian fatalities in the United States declined approximately steadily from 4,795 fatalities in 2006 to 4165 fatalities in 2009. Find the “average rate of change” of the number of pedestrian fatalities.

Average rate of change = 0.1313 or 13.13% (approx.)

Step-by-step explanation:

Given:

Pedestrian fatalities in 2006 = 4,795

Pedestrian fatalities in 2009 = 4,165

Find:

Average rate of change

Computation:

Average rate of change = [4,165-4,795] / 4,795

Average rate of change = [-630] / 4,795

Average rate of change = 0.1313 or 13.13% (approx.)

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:

.

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

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step-by-step explanation: