The school cafeteria has two meal options in the main line today: a grilled chicken sandwich or a spicy fried chicken sandwich. in one lunch period, 60 people order the grilled chicken sandwich, and 90 people order the spicy fried chicken sandwich. 40 of the people who ordered the grilled chicken sandwich got a chocolate milk to drink. if the sandwich choice and the drink choice are independent, how many people got a chocolate milk given that they ordered the spicy fried chicken sandwich?

60 people got the chocolate milk who ordered spicy fried chicken sandwiches.

Step-by-step explanation:

Out of 60 people who ordered grilled chicken sandwich, got the chocolate milk to drink = 40

Therefore, the percentage people who got the chocolate milk out of 60 people =

= 66.67%

If the sandwich choice and drink choices are independent, then the number of people given chocolate drink who ordered spicy fried chicken sandwich

= 66.67% of 90

= 60

Therefore, 60 people got the chocolate milk who ordered spicy fried chicken sandwiches.

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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