What is -3(2r+1)+2(3r-6) < -15

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

Find the missing factor. write your answer inexponential form.9^2=9^4×

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units