The pie chart below shows the average words per minute someone can type. If the total number of people surveyed is 10000, approximatelyhow many of them type 45 words per minute or less?
Words Per Minute
31 - 35
136 -40
41 - 45
146 - 50

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12