Scores on the SAT Math section have mean average of 500 with a standard deviation of 100. What is the probability that a randomly selected student scored below a 680 on the SAT Math section? Give the decimal form of the percentage as your answer rounded to the nearest thousandth. For Example if you have 28.3% , your answer would be 0.283 .

the answer to the expression is 83

i think the answer is seven, for if i'm being useless °ω°

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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rauschg

rauschg · hand

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step-by-step explanation: