The histogram below represents a data distribution with uniform class widths. Which of the following is the mean of the data distribution?
3
2-
1.2.3.4.5.6.7.8'9'10
O A. 6.2
O B. 5.9
O C. 5.6
D. 6.5

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil