Give an example of a sample of the students in an elementary school.

Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?

Suppose you are analyzing the relationship between time and distance given in a table,and there are 4 values for each quantity.you divide distance 2 minus distance 1 by time 2 minus time 1.you then divide distance 4 minus distance 3 by time 4 minus time 3 and get a different answer.what can you say about the relationship?

If a + b = 28 and a - b = 10, then b =?