Ilyas has a $50 online gift voucher. He plans to buy as many books as he can with it. The cost of each book is $4. There is also a single shipping charge of $7.50. How many books can he afford without spending more than his gift voucher amount?

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

What is the length of bc ? enter your answer in the box.bc =

Pls brainliest will be awarded if answer is correct