Here's a subtraction problem that has been solved incorrectly.
4 1
- 2 7
2 8
choose the addition sentence that checks this subtraction problem.
a)41
+2 7
68

b)4 1
+ 28
69

c)28
+ 27
55

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b. false

Paul can type 60 words per minute and jennifer can type 80 words per minutes. how does paul's typing speed compare to jennifer's