Please help! Correct answer only, please! I need to finish this assignment this week Consider the matrix shown below: A. B. C. D. Which matrix below represents 3 X 3 Identity Matrix (LaTeX: I_{3} I 3 ). A. B. C. D.

D i am positive

Step-by-step explanation:

answer:

what is your question that you ask

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4