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Maths
GCSE

Solve: (6x + 4)/(2x - 2) + 6 = 8

(6x + 4)/(2x - 2) + 6 = 8 (subtract 6 from both sides) (6x + 4)/(2x - 2) = 2 (multiply both sides by (2x - 2)) 6x + 4 = 2(2x - 2) 6x + 4 = 4x - 4 (add 4 to both sides) 6x + 8 = 4x (subtract 4x from both s...

Answered by Emma F. Maths tutor
5116 Views

Make y the subject of the formula x=(2y-1)/(4-y)

1st step: we multiply the equation by (4-y) and we get: x(4-y)=(2y-1) 2nd step: we bring the equation to the form: 4x-xy=2y-1 3rd step: now we isolate all the y terms on the same side: 2y+xy=4x+1 4th step...

Answered by Andrea B. Maths tutor
10278 Views

John ran a 450m race (2sf) in a time of 62 seconds (nearest second). Calculate the difference between his maximum and minimum average speed. (3sf)

S=D/T Max= 455(upper bound)/61.5(lower bound)= 910/123 m/s Min= 445(lower bound)/62.5 (upper bound) = 178/25 m/s Max - Min= 856/3075 m/s

Answered by Christopher R. Maths tutor
3366 Views

x is inversely proportional to P. When P = 6, x =2. What does x = when P = 4?

We know x is inversely proportional to P, so immediately we know their relationship is of the form x = k/P , where k is a constant. We are also given some conditions we can use to solve for k: when x = 2,...

Answered by Alec S. Maths tutor
3234 Views

How do you simplify (3x-3)/(x-1)?

The important thing here is to try and find the bottom bracket in the top bracket ie the numerator

Notice that (3x-3) can be divided by 3 and therefore (3x-3) can be written as 3 multiplied by (x-1...

Answered by Liam O. Maths tutor
6605 Views

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