The seafloor spreads at a rate of aproximatly 10 cm per year. if you were to collect data on the spread of the seafloor each week, which unit whoul you use to record your data. explain?

2,000 micrometers

Step-by-step explanation:

Well 10 cm in 50 or so weeks is 0.2 cm per week so you could use mm  

Then the measuremet would be about 2 mm per week.  

If the measurement is extremely accurate you could consider using micrometres.  

There are 1000 micrmetres in 1mm so in 1 week 2,000 micrometres

Hope this helps! <3 Jacoby

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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