(Solving similar triangles!)
Can someone please help and explain thoroughly on how to do it??

y=22.5

Step-by-step explanation:

Ok since the triangles are similar, the ratio of the length of the lines will be equal.

DEF=ABC

So BA equals to ED (1,2,3=1,2,3 so D=A E=B F=C)

To get one of the ratios divide the line you are looking for with one of the other ones of the same triangle

37.5/20=1.875 <-- This is ED/DF which since the triangles are congruent, means that BA/AC should equal to 1.875 too

Since we already have AC, all we need is to solve

BA/12=1.875

Multiply both sides by 12

BA=22.5

And since BA and y are the same thing, y=22.5

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

it is true

step-by-step explanation:

all the combinations add up i used   calculator