Ali swam 0.5 squared kilometers in January and 0.3 cubed kilometers in February. What is the total distance he swam for both months? 1.9 kilometers 0.277 kilometers 0.727 kilometers 0.8 kilometers

d = 0.277 km

Step-by-step explanation:

Distance covered in January = 0.5² km

The distance covered in February = 0.3³ km

We need to find the total distance he swam for both months. It can be calculated by finding their sum. So,

So, he swam 0.277 km for both months. Hence, the correct option is (b).

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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