Write a phrase as an algebraic expression 4 times the sum of a number and 20 a 20 / y c 4(y + 20) b 20 + y d 4y - 20y

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.

Walter is to make cookies for a basketball tournament. he's made 15 cookies so far. his coach asked him to make at least 20 cookies but no more than 55. solve the inequality and interpret the solution. 20 ? x + 15 ? 55

In his stamp album ,jamal has 48 new stamps and 72 used stamps. which ratio can be represented by 3/5