Help me do this please

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

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2