Leila bought some books. She spent a total of $58 after a discount of $7 off of her total purchase. Each book cost $5. (a) Write an equation that could be used to answer the question above.
First choose the appropriate form. Then, fill in the blanks with the
numbers 58,7, and 5. Let b represent the number of books.

answer: idk

step-by-step explanation:

heyyy

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