Acarpenter used 9 1/2 ft of cedar for every 7 2/3 ft of redwood for a construction project. if the carpenter uses 4 3/4 ft of cedar, how much redwood does he need?

For this case we can solve the problem by making the following rule of three:

9 1/2 ft of cedar --------------> 7 2/3 ft of redwood

4 3/4 ft of cedar --------------> x

From here, we clear the value of x.

We have then:

Rewriting the expression we have:

The carpenter needs the following amount of redwood:

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest

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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