How do you multiply positive and negative integers?

The tangent of an angle is not which of the following? a) ratiob) proportionc) fractiond) opposite over adjacent

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?