Which mental math strategy can be used to find the exact sum of 873 and 47? check all that apply?

800 + 70 + 47
870 + 40 + 3 + 7
873 + 40 + 7
873 + 40 + 3 + 7
880 + 70 + 7

If benito is selecting samples of five values from the table, which row will result in the greatest mean? population data row 1 4 2 2 3 3 row 2 3 3 4 3 2 row 3 2 4 3 4 3 row 4 3 4 4 7 3 row 1 row 2 r

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

Which of the following can be used to explain a statement in a geometric proof?