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Simplify: 2x + 6y + 2y - x

To answer this question you need to group the different terms to form the shortest equation possible. It is easiest to treat the x terms and the y term as seperate, so you have: 2x - x and 6y+2y Here, x simp...
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Answered by Libby D. • Maths tutor
4004 Views

Solve 3x – 5 < 16

The question is asking you to isolate, or find out what 'x' is in relation to the equation. Don't be confused by the less than sign '&lt;'. Treat it like an equals sign '='. 3x - 5 =16. So let's get the x by...
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Answered by Judith O. • Maths tutor
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solve 6(x + 4) = 2x -4

The first step is to expand the brackets on the left hand side, you can either use the arrow method or the box method for this. This gives you: 6x + 24 = 2x - 4 Then you want to gather all the x's onto the s...
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Answered by Martha B. • Maths tutor
5311 Views

The nth term of a sequence is 7n-4. Write down the 4th term and the 10th term of the sequence. The first four terms of a different sequence are 9, 13, 17, 21. Find an expression for the nth term of this sequence.

The nth term of a sequence means that when we substitute the value of n in to the equation, we find that term. So to find the 4th term in the sequence, we substitute 4 in for n. 7(4)-4=28-4=24. The 10th term...
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Answered by Laura T. • Maths tutor
25077 Views

Find the median, mean, and mode of the following set of data: 55, 43, 62, 91, 2, 43, 34, 16, 16.

To find the median, we first need to rewrite the set of data in ascending order of values: 2, 16, 16, 34, 43, 43, 55, 62, 91. We then count how many items are in this list. The median is the item in the midd...
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Answered by Laura T. • Maths tutor
5349 Views