NEED DESPERATE HELP In a study of the performance of a new engine design, the weight of 22 aircrafts (in tons) and the top speed (in mph) were recorded. A regression line was generated and shown to be an appropriate description of the relationship. The results of the regression analysis are below. t-ratio 37 Depend Variable: Top Speed Variable Coefficient s. e. of Coeff Constant 11.6559 0.3153 Weight 3.47812 R squared = 87.5% R squared {adjusted) = 86.9% S=0.6174 with 22 - 2 = 20 degrees of freedom prob < 0.0001 s 0.0001 11.8 Part A What is the LSRL based on the analysis provided? Make sure to identify what the variables represent in the context of the problem. (4 points) Part B. What is the predicted value for the top speed of an aircraft if its weight is 100 tons? Show your work. (6 points)​

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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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the correct answer would be:

220 centimeters

to get this you can use the pythagorean theorem

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