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The area of this rectangle is 56 cm2 length = 3k+2 and width = 7 - Find the value of k

The first step in answering any maths question is to identify key words or key information. Key information is area, length and width. We have been told that the total area is 56cm2. We know that area is len...
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Answered by Ayat B. • Maths tutor
3749 Views

How do you simplify the square root of 18 without using a calculator?

Surds can be simplified if the number in the square root has a square number as a factor. It is also worth remembering that SQRT(ab) = SQRT(a) x SQRT(b). So if you combine these two points, lets look at how ...
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Answered by Richard B. • Maths tutor
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Solve the following pair of simultaneous equations 1)x+3y=11 2)3x+y=9

Rearrange equation 2 to make y the subject, then substitute the y expression into equation 1 and collect like terms: 3x+y=9 -->> y =9-3x x+3 y =11 -->> x+3(9-3x)=11 -->> x+27-9x=11 -->&g...
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Answered by Tutor94832 D. • Maths tutor
8075 Views

How to factorise x^2 + 6x +5

Firstly you check to see if there is a coefficient to the x 2 term, in this example there isn't so we know that both the brackets will have a single x in, (x + )(x + ). We also know both the signs in the bra...
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Answered by Fred E. • Maths tutor
40072 Views

A sunflower is one hundred and fifty centimetres tall. How tall will it be if its height increases by ten per cent?

To start, find out 10 per cent of 150. To find a percent, divide by 100 and multiply by the percent. 150 divided by 100 is 1.5, 1.5 multiplied by 10 is 15. Finally, add the 10% on to the original, so 150 + 1...
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Answered by Charmaine G. • Maths tutor
5056 Views