If the mean for a sample of 8 people was 20 and the mean for a second sample of 4 people was 10, what would the weighted mean be equal to?
A) Cannot determine from the information given.
B) 16.67
C) 15
D) 13.33

The ratio of blue cards to green cards is 2 to 5. there are 8 blue cards. complete the diagram and explain how you can find the number of green cards.

Two different linear functions are shown below with two points given from each function. use slope-intercept form or point-slope form to find the equation of each. linear function a points: (–5, –2), (–5, 7) linear function b points: (7, –5), (–2, –5) function a has: the equation of line a is: function b has: the equation of line b is:

Which best explains why this triangle is or is not a right triangle?