Tim had 187 dollars to spend on 9 books. after buying them he had 18 dollars. how much did each book cost?

Each book costed about $18.77

To do this problem do this:

9b = 187 - 18

This is because since you have 18 dollars left over subtract it from the total amount of money you had before.

9b = 169

Divide:

b = $18.77

To check you work multiply in 18.77, 9 times and add 18 dollars to it:

18.77(9) = 169

169 + 18 = 187

Tim had $187 dollars to spend.

Tim buys 9 books.

Tim has $18 dollars left after buying 9 books.

First, subtract the total amount of dollars Tim has to spend with his remaining balance after purchasing the books to find the total amount of cash spent on books.

$187 (total spending) - $18 (remaining balance) = $169 (spent on books)

Then, divide the amount of cash spent on books with the amount of books bought.

$169 (spent on books) ÷ 9 (books) = $18.77 (cost per book)

Quick note: You don't round up since this is dealing with cash. You can only round down, but leave to 2 decimal places (to the hundredths place) for a precise amount.

Tim spent $18.77 on each book.

2

step-by-step explanation:

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet