Thirteen plus a number N is greater than fifteen

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°

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]