Find the measure of the arc or angle indicated. Assume that lines which appear to be diameters are actual diameters. Show all work.

Which value is not a solution of 8x^3 – 1 = 0

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?

Explain how you can find the missing fraction in 3 4/5 / (blank) 2 5/7. then find the missing fraction.