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When a fifth of the class is absent, there are 24 pupils present. What is the total number of pupils in the class?

Since 1/5 of the class is absent, this must mean that 4/5 of the class is present. We are told that 24 pupils are present, so 4/5 of the class must equal 24 pupils. Now we need to find out how many pupils 1/...
AT
Answered by Arisera T. • Maths tutor
9529 Views

How should historiography be incorporated into an essay?

Historiography is a great way to boost your grade in an essay when used correctly. As well as looking at more general terms such as 'revisionist' or 'orthodox', you can look at specific historians and what t...
ES
Answered by Elizabeth S. • History tutor
3087 Views

Solve algebraically 6a + b = 16 & 5a - 2b = 19

6a + b = 16 Equation 1 5a - 2b = 19 Equation 2 Scale up one equation so both equations have same coeffient of one variable ie 2 times Equ 1 12a + 2b = 32 5a - 2b = 19 Add variables of each equation, hence el...
EM
Answered by Euan M. • Maths tutor
3642 Views

If a 30N force is applied to a stationary object of mass 10kg, at what speed will the object accelerate?

By taking the formula F=m*a, and rearranging the make a the subject, we get a=F/m. Then by substituting in the values given we can work out that a=30/10=3. The units of acceleration are ms -2 so hence, the o...
CM
Answered by Chris M. • Physics tutor
6836 Views

Find the solutions to the quadratic equation x^2-9x+20=0

By factorising the expression, (x-5)(x-4)=0. This means that either (x-5)=0 or (x-4)=0. By solving these equations we can work out the solutions to be x=4,5.
CM
Answered by Chris M. • Maths tutor
3898 Views