Top answers

Mike has 4 blue balls, 6 green balls and 10 yellow balls what is the probability that he will pick a yellow ball.

It would be worked out by adding 4+6+10 to get 20 and then it would be number of yellow balls over total number of balls which would be 10/20. Depending on ability this may then be simplified down to 1/2.
GE
Answered by Georgia E. • Maths tutor
2628 Views

Solve the equation 7 - 4x = x + 8.

First we add up all the 'x' terms. So the equation 7 - 4x = x + 8 becomes 7 - 4x - x = x +8 - x => 7 - 5x = 8. Now we can do the same with the other terms. The equation now becomes 7 - 5x - 7 = 8 - 7 =&gt...
MS
Answered by Mira S. • Maths tutor
4236 Views

How do I know which calculation to do first in questions with multiple operations (e.g. 2 x 3 - 2 x 5)?

In these situations, we can use an acronym called "BIDMAS". BIDMAS stands for: "brackets", "indices", "division", "multiplication", "addition" and ...
DM
Answered by Dalitso M. • Maths tutor
7994 Views

Bob has £500 and gives 70% to Edmund and 40% of what is left to George. Work out how much money each person has.

Bob - £90, Edmund - £350, George - £60.
MD
Answered by Martina D. • Maths tutor
2216 Views

Find the roots of the following equation: x^2 + x - 6 = 0

Student should factorise equation to (x-2)(x+3) = 0 This gives roots of 2 and -3
AR
Answered by Adam R. • Maths tutor
2196 Views