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Maths
GCSE

I know the formula, but I don't understand it.

A thorough understanding of all the mathematical formulas prescribed in the subject specification is crucial for your survival in the no-mans-land of the maths exam, where your examiner tries his best to ...

LL
Answered by Le L. Maths tutor
3182 Views

Bill buys 8 identical cricket balls. The total cost is £169.04 Work out the total cost of 19 of these cricket balls. (Calculator allowed).

Start by identifying the cost of one cricket ball: £169.04 ÷ 8 = £21.13 Next multiply this by the number of cricket balls he wants to buy: £21.13 x 19 = 401.47 The total cost of 19 cricket balls is £401.4...

GJ
Answered by George J. Maths tutor
2860 Views

There are 300 students at a school who have been asked to attend assembly. 1/10 students are sat on chairs, 85% of students are sat on the floor, the rest do not attend assembly. How many students did not attend assembly?

300 x 1/10

= (300/10) x 1

= 30 students sat on chairs

85% of 300 

= (300/10) x 8.5

= (30 x 8) + (30 x 0.5)

= 240 + 15

= 255 students sat on the floor

<...
JD
Answered by Jonny D. Maths tutor
3394 Views

1

1

AL
Answered by Adam L. Maths tutor
3485 Views

How do I factorise a quadratic equation?

A quadratic equation is one that takes the form.. ax2 + bx +c = 0

Factorising an equation like this involves putting the equation into two brackets.

The method varies slightly dep...

BE
Answered by Beth E. Maths tutor
3095 Views

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