Simplify each expression below by distributing and/or combining like terms

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?

When the ball has traveled a distance of

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry