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A class of 10 students all complete a maths exam. Their marks are as follows: 67, 82, 48, 36, 55, 95, 19, 49, 62 and 73. Find the mean, median and range.

First let's start with the mean, the formula for the mean is: (Sum of terms)/(amount of terms). We know the amount of terms is 10 as this is in the questions, to find the sum of the terms we add all the mark...
GA
Answered by George A. • Maths tutor
3287 Views

Solve the equation: x^2+7x=-12

The first step for this question is to rearrange the equation to get the right hand side equal to 0.x^2+7x+12=0Next, we have to try and factorise this equation. We do this by considering what two numbers mul...
GA
Answered by George A. • Maths tutor
4985 Views

All tickets to the movie theatres cost the same price. Jessica and Thomas pay £84 together. Jessica pays £38.5 for 11 tickets. How many does Thomas Buy?

Firstly, you form the question into an equation. for example, J + T = 84. We know Jessica paid £38.50, so now we can add that to the equation. 38.50 + T = 84. Now that we have does this we move the 38.5 to t...
KP
Answered by Kate P. • Maths tutor
3102 Views

Solve (5 - x)/2 = 2x – 7

(5 - x)/2 = 2x - 7, 5 - x = 2(2x - 7), 5 - x = 4x - 14, 5 + 14 = 4x + x, 19 = 5x, 19/5 = x
FB
Answered by Fraser B. • Maths tutor
3996 Views

what is 0.777... as a fraction?

x=0.777...10x=7.77...9x=10x-x=7 9x=7so x=7/9so x=0.777...=7/9
SD
Answered by Shreya D. • Maths tutor
4016 Views