Katie leans a 12-inch ruler against a stack of books that is 7 inches high. the ruler leans in such a way that the tip of the ruler lies right above the edge of the book. estimate the angle formed where the ruler touches the desk. round the answer to the nearest hundredth.

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

What are “like terms”? why can we only add like terms?

Benjamin believes that ¼ % is equivalent to 25%. is he correct? why or why not?