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Find y and x of the to following equations: x +3y = 11 and x + 2y = 9.

This question can be solved using the elimination method. Set out the problem as follows: x+3y=11 - x+2y=9 0+y=2 => y=2 Therefore one can substitute the value of y obtained in to any one of the two eaquat...
MB
Answered by Munisha B. • Maths tutor
7169 Views

What is the 'Nth-term rule' in linear (arithmetic) sequences and how is it used?

In any sequence, the position of a term (1st, 2nd, 3rd etc.) is represented by the letter ‘n’. In linear sequences only, the ‘nth-term rule’ gives the value of any term in that sequence at position ‘n’. It i...
EI
Answered by Edmund I. • Maths tutor
47885 Views

Expand and simplify 3(m + 4) – 2(4m + 1)

The first thing that we are going to do to tackle this problem is to expand the bracket on the left-hand side (3(m+4)). To do this you have to multiply each of the terms inside the bracket with the 3 that is...
RR
Answered by Rahee R. • Maths tutor
4866 Views

1) 3x + y = 11 2) 2x + y = 8

Subtract 2) from 1), we get x = 3. This means that y must be 2.
DB
Answered by Dewi B. • Maths tutor
3657 Views

Write √98+3√8-√200 in the form a√2, where a is an integer

Step 1 : Put all the surds in to the form a√2. Starting with √98 try and work out what numbers multiply together with 2 to get 98 (2x49). Therefore √98=√(2x49). As 49 is a square number you can take it outsi...
ER
Answered by Emma R. • Maths tutor
6474 Views