Hilary wonders how much sunlight really affects plant growth. She pots 22 plants and puts some in direct sunlight and some in shade and records their height after 3 weeks. Her results are shown in the graph.

Which statement best describes the variability?

A) On average a plant grew about 8 cm.
B) A plant grew on average about 3.3 cm.
C) The average range of plant growth was somewhere around 7.5 cm.
D) There are two groups of plant growth. Each group grew a range of 3 cm.

B) A plant grew on average about 3.3 cm.

Step-by-step explanation:

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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answers

rauschg

rauschg · hand

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step-by-step explanation:

inverse operation of addition