2a- 1-4 1/3a+ 7-a consider the linear expression what are the like terms in the expression simplify the linear expression

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.