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Maths
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BIDMAS

When solving a maths problem you can't just do it in any order. 'BIDMAS' is a way to remember what order to solve in. It stands for: BracketsIndicesDivisionMultiplicationA

Answered by Anna H. Maths tutor
1452 Views

Solve the equation 2(3x-5)=7

Firstly expand the brackets due to BIDMAS.6x-10=7Now we want to have x on its own side, so add 10 to both sides.6x=17Finally we want to solve to find x, so divide both sides by 6.x=17/6

Answered by Will B. Maths tutor
1511 Views

What is 6 3⁄9 as an improper fraction?

To convert a mixed fraction to an improper fraction (top-heavy), follow these steps: 1. Multiply the whole number part by the number in the denominator. So 6x9 = 54.2. Add this result to the number in the...

Answered by Prachi A. Maths tutor
3915 Views

The function f is defined by f (x) = e ^(x+2), where x is any real number. Find f ^-1(x) and state its domain.

y=ex+2 , we want to make x the subject, x+2=ln(y), x=ln(y)-2, now that x is the subject, the inverse of the function can be found by swapping the x and the y. Therefore the inverse function ...

Answered by Jacob C. Maths tutor
3106 Views

how do you calculate a percentage of a number?

The easiest way to do it is by using a simple equation. You know that the number N you want to find the percentage of is the "total", which means it is 100%. Let's call X the result of the perce...

Answered by Francesca B. Maths tutor
1565 Views

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