You can use the same method to subtract numbers in scientific notation . Complete the steps to evaluate the subtraction expression (2 .1 3 10 9) 2 (9 .7 3 10 7) .(2 .1 3 10 9) 2 (9 .7 3 10 7) 5 ( 3 107) 2 (9 .7 3 10 7) 5 ( 2 ) 3 107 5 3 107 5 3 10 9

i belive those are the ones that are under 90 degreese.

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

answer: 0.64

step-by-step explanation: