Use the associative property of addition to write an expression equivalent to (n + 2) + 7. which expression is equivalent to (n + 2) + 7 by the associative property of addition? o a. (n+7)+2 ob. n +(2+7) oc. 7+ (n +2) od. n +2 +7 click to select your answer. save for later

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.