) Approximately 5 out of 8 students at Tina's school are on a sports team. Two students design accurate simulations to determine how many
students would need to be randomly selected before 9 students who are
on a sports team are found.
A student places 60 blue marbles in a bag to represent students who are
on a sports team and places some yellow marbles in the same bag to
represent students who are not on a sports team. The student will
randomly select a marble, record the color, and return the marble back to
the bag. How many yellow marbles does the student place in the bag?

answer: what equations are there

step-by-step explanation:

translate k to n and reflect across the line containing jk.

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

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step-by-step explanation: