Determine whether the given matrix product is defined. If so, state the dimensions of the product.  If not defined, write "undefined" and n/a in the second blank. M2x3M2x3 and N3x3N3x3 ; MN

M2x3M2x3 and N3x3N3x3 ; NM

P3x4P3x4 and R4x1R4x1 ; PR

P3x4P3x4 and R4x1R4x1 ; RP

Q1x2Q1x2 and R4x1R4x1 ; QR

Q1x2Q1x2 and R4x1R4x1 ; RQ​

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

greater than one

step-by-step explanation: