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Solve 8(x + 3) = 36

In this question (taken from a non-calculator higher level GCSE maths past paper), we want to find an answer x=? Ultimately we want to leave x 'by itself' on the left hand side, with our answer on the right....
KP
Answered by Kathryn P. • Maths tutor
13454 Views

Differentiate y= (2x+1)^3. [The chain rule]

For maths questions I feel that getting your head around the concepts are difficult but once achieved allow you to comfortably answer a wide range of questions. Therefore for maths tuition I think it is impo...
JJ
Answered by James J. • Maths tutor
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What is the probability that a leap year has 53 Sundays?

This is pretty straight forward. There are 366 days in a leap year, i.e, 1 more than a normal year. Now, 52 weeks make up 344 days (52 x 7 = 344) That means that we already have 52 sundays for sure. Then, we...
YR
Answered by Yatharth R. • Maths tutor
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How do I find the area of a circle C with diameter 14cm?

The formula for the area of a circle is π r 2 . To use this formula we first need to find r, the radius of the circle. The radius is the distance from the centre of the circle to the edge, and is equal to ha...
TH
Answered by Tamsyn H. • Maths tutor
25672 Views

There are 7 white socks and 4 black socks in a drawer. Two socks are taken out at random without replacement. Work out the probability that the two socks are the same colour

The probability of pulling out two socks of the same colour is n/m*(n-1)/(m-1) where n is the initial number of that type of sock and m is the total number of socks in the drawer. The reason that we take 1 a...
JB
Answered by James B. • Maths tutor
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