Brainliesttt !me : )

the median weekly earnings for american workers in 1990 was $412 and in 1999 it was $549. calculate the average rate of change between 1990 and 1999. explain and show your work.

The average rate of change between 1990 and 1999 is 15.22...

Step-by-step explanation:

The rate of change shown here is given by change in monetary income divided by change in time.

So our equation would be:

Rate of change = Increase in money / Increase in time

= $549 - $412 / 1999 - 1990

= 137 / 9

= 15.22...

I hope this helps!

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

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.