Decide wether the lines are parallel, perpendicular, or neither y=8x+7 y=8x-5

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Write the rational number in lowest terms 99/-15

Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]