This is scene #6 in the CSI matrix algebra packet. The answer is D = 60 I just need a clear step by step on how to find D = 60. The x1, y1 are vertices on the triangle. x2, y2 is another one. It’s finding the determinant so expansion by minors would work.

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below: