12. Write an equation for each situation. Then
solve your equation to find the number of
stones in one bag. Each bag has the same
number of stones.

a) Two bags of stones and six extra stones
equals 66 stones.

b) When seven stones are removed from
one of the bags, the three bags contain
a total of 32 stones.

false

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

21

jk it's 20

step-by-step explanation: