Timmy can usually make six paper airplanes in an hour. However, if he gets interrupted by his parents, he can only make four per hour.

His friend John can make seven paper airplanes per hour.

One day, Timmy and John decide to have a three-hour long

contest to see who can make the most paper airplanes. During the

contest, Timmy is interrupted once every hour. John also had to

take a break and do chores for an hour. How many more paper

airplanes does the winner make?

the 4th choice is the correct one

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:

step-by-step explanation:

i think the correct option is the second option.