Bill kept track of the number of hours he spent exercising each week. the results for 15 weeks are shown below. find the midrange. 7.4 6.7 7.4 7.4 7.6 8.0 6.6 8.0 8.4 7.4 8.8 6.7 8.0 9.0 7.6

7.8 hours.

Step-by-step explanation:

We have been given a a data set, which represents the number of hours Bill spent exercising each week. We are asked to find the mid-range of our given data set.

Our data set is:  7.4, 6.7, 7.4, 7.4, 7.6, 8.0, 6.6, 8.0, 8.4, 7.4, 8.8, 6.7, 8.0, 9.0, 7.6

Let us arrange our given data in ascending order.

6.6, 6.7, 6.7, 7.4, 7.4, 7.4, 7.4, 7.6, 7.6, 8.0, 8.0, 8.0, 8.4, 8.8, 9

Since we know that mid-range is the mid-way between the least value and the greatest value of the data set or it is average of least and greatest data points.

We can see that 6.6 is the least data point and 9.0 is the greatest data point of our given data set.

Therefore, the mid-range of our given data set is 7.8 hours.

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.

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rauschg

rauschg · hand

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step-by-step explanation:

i believe the correct answer is option 4.principalities were small territories that were run by russian rulers.

which statement correctly defines principalities in northern asia in the 1200s? principalities were small territories that were run by russian rulers.

hope i could ! : )