Acertain circle in the xy-plane has its center at the origin. if p is a point on the circle, what is the sum of the squares of the coordinates of p?

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?