7×8=(5×7, times, 8, equals, start color #aa87ff, left parenthesis, 5, times, end color #aa87ff \purpleC){}+\greenD{(2 \times 8)})+(2×8)start color #aa87ff, right parenthesis, end color #aa87ff, plus, start color #1fab54, left parenthesis, 2, times, 8, right parenthesis, end color #1fab54
\phantom{7\times 8 }={} \purpleC{40} + {}

22 dimes and 9 nickels

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

d 600 because 15*10*2=300

300+300=600

step-by-step explanation:

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically