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There are a couple of ways to approach this. A grid showing all the possibilities can be drawn up, which would help to illustrate the solution a little more explicitly. For now, let's talk through the log...
Mean is the average value, to calculate it you have to add up all the values and divide it by the number of values.So in this case, adding up: 34 + 35 + 36 + 32 + 39 = 176Then, divide the sum by number of...
One way to find the values of x and y is to substitute the value of x into one of the equations. To sub in x we need to rearrange an equation to get x on its own. We can change the second equation to x = ...
The brother receives £18 less, meaning the sister receives £18 more than the brother.7 - 4= 3. This means that 3 parts of the ratio is equal to £18, therefore 1 part of the ratio is equal to £6.Brother ge...
The first step to any problem is to draw a suitable diagram. Here we draw a free body diagram, marking the angle x, the friction force F, normal reaction force N and weight of the block Mg. "Stat...
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