An urn contains n balls numbered 1, 2, 4, 8, etc. up to 2n-1 where n > 1. If a person selects one ball from the urn and then replaces it and selects a second ball, what is the expected value of the sum of the balls' numbers?

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Item 1 solve for s. s+24=90 −114 −66 66 114

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.