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Maths
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Differentiate y=x^(-1/2)-x

The formula you are given is an equation which is written in terms of x. So we will be differentiating with respect to x. 

When differentiating we take the current power and place that in front of ...

ZT
Answered by Zarin T. • Maths tutor
3700 Views

Find x when 2x-3=5

To find what x is, we must rearrange the equation so that it says x=. To do this we need to get rid of the -3 on the left hand side of the equation. This can be done by adding 3 to both sides of the equat...

RC
Answered by Rosie C. • Maths tutor
4385 Views

Solve the simultaneous equations y=x-5 and 10y=2x+6 by elimination, and by substitution.

Elimination:

Multiply equation (eqn) 1 by 2: 2y=2x-10

Subtract modified eqn 1 from 2: 8y=16

Divide through by 8

JR
Answered by Jack R. • Maths tutor
3477 Views

what does a value shared in the ratio 2:3 mean?

this means that there are 5 parts to share out altogether. (2+3=5) So you take the value you wish to share and divide it by 5. once you've divided the value by five, to share in the ratio 2:3 simply means...

ET
Answered by Ewan-James T. • Maths tutor
69198 Views

3/8 is the same as ?/24 ?

Look at the two fractions to see what multiplier has been used. In this case, the denominators are both known: 8 and 24.

8 has been multiplied by 3 to get a new denominator of 24.

This means...

RC
Answered by Rahul C. • Maths tutor
3627 Views

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