Denzel wants to work out the density, in g/cm', of a block of wood. The block of wood is in the shape of a cuboid. His measurements are length of 17.7 cm (correct to the nearest mm) width of 8.3 cm (correct to the nearest mm) height of 13.0 cm (correct to the nearest mm)
He also measures the mass as 2090 g (correct to the nearest 5
By considering bounds, work out the density of the wood. Give your answer to a suitable degree of accuracy.
You must show all your working and
give a reason for your final answer.

Step-by-step explanation:

Given

Required

Determine the density

Density is calculated as thus:

Since, the block is a cube

Substitute values of Mass and Volume in

approximated

Since the dimensions are given in tenths, then it's safe to leave our answer approximated to nearest tenth

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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