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Factorise the following expression: x^2+12x-45

x^2+12x-45 x^2+15x-3x-45 (15x - 3x= 12x and 15 x -3=-45) x(x+15)-3(x+15) (x-3)(x+15)
AH
Answered by Aisha H. • Maths tutor
3962 Views

I want to pave my patio, which has dimensions of 6m by 8m. I'm going to pave it with stones that have dimensions of 50cm by 50cm. Each tile costs £1.50. How much will paving my patio cost me?

My patio has an area of 6 8 m , so 48m 2 . Each tile has an area of 0.5 0.5 m, so 0.25m 2 . To find the number of tiles we need, we divide the area of the patio by the area of one tile: 48/0.25 = 192 tiles E...
DL
Answered by Danny L. • Maths tutor
3211 Views

How many thirds are there in 9?

Number of thirds in 1 = 3 Number of thirds in 9 = (number of thirds in 1) * 9 = 27 thirds
JJ
Answered by Jaredd J. • Maths tutor
3751 Views

Calculate, giving the answer as simply as possible, 7/12 + 1/12

7/12 + 1/12 = 8/12 8/12 can be simplified to 2/3 therefore the answer is 2/3 as this is the most simplified version of the fraction 8/12
SR
Answered by Stefanos R. • Maths tutor
3976 Views

Write down the next two terms in the sequence: 14, 14.75, 15.5, 16.25, ...

17 17.75
MC
Answered by Matthew C. • Maths tutor
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