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Maths
GCSE

Work out 2 7/15 -1 2/3

First turn into improper fractions37/15 - 5/3Get same denominator on bottom37/15-25/15Take away numerator (37-25)/15= 12/15 Simplify 4/5

Answered by Henry G. Maths tutor
4453 Views

How would you factorise x^2 + 4x + 4

This is in the form ax2 + bx + cWhere, a= 1b=4c=4To factor we have to find two numbers that:Add up to b, in this case 4Multiply together to give c

Answered by Toby B. Maths tutor
2568 Views

What is the volume of a 3m long cone with radius 2m?

Formula for the volume of a cone = 1/3 * 3.14 * r^2 * h Therefore, volume = 1/3 * 3.14 * (2)^2 * 3 = 12.57m^3 .

Answered by Biplav P. Maths tutor
2927 Views

How do you simplify a surd?

If you have a surd, for example root27, in order to simplify it you need to find factors of it which are square numbers. Multiplying surds is like regular multiplication, for example, root27 = roo...

Answered by Annabel H. Maths tutor
3048 Views

The sides of a rectangle are x and (x+2), where x>0 the area of the rectangle is 8, what is the value of x?

X*(X+2) = 8X2 + 2X = 8X2 +2x-8=0 S 2P -8N 4, -2(X+4)(X-2)X=-4 X=2X can only be positive in this case so X=2

Answered by George G. Maths tutor
2457 Views

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