Tim and Jayne were discussing the following mock exam question. Here is some data about two groups of people listening to a radio station one day.
Percentage
Mean number of Range of number of
hours listening hours listening
23
1.4
4.3
77
6.5
13.8
Group Alpha
Group Beta
Compare the data for people in the Alpha group with people in the Beta group.
Make three comparisons.
Tim said he had struggled with the question.
Jayne said she had gained full marks by starting each comparison with,
Beta had a higher...
Try and work out the three comparisons she used.
Write them on separate lines.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

ask for details followreport by buttfacelily 2 minutes ago

answers

rauschg

rauschg · hand

know the answer? add it here!

step-by-step explanation:

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.