What is the solution to this equation 3x-7+4x x28

568

Step-by-step explanation:

First, since x is 5, we sub in 5 for each x. So the equation now looks like 15 - 7 + 20 times 28. So we want to do 20 times 28 first. This equals 560. So 15 minus 7 is 8 and 8 plus 560 is 568. I hope this helps! Please make me brainliest!

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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