How do you expand using the foiling method?

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.