Please help!

Rationalize the denominator and simplify. (sqrt(a+1)-2)/(sqrt(a+1)+2)

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c =