Suppose that circles a and b have a central angle measuring 100°. additionally, the measure of the sector for circle a is 10π m2 and for circle b is 40π m2. if the radius of circle a is 6 m, what is the radius of circle b?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?