Top answers

How would you answer a frequency tree question such as '400 people were asked if they drink orange juice, 8/10 say yes, 25% of these say yes to drinking 3 cups a day. Complete the frequency diagram.'?

There are a total of 400 people, therefore to work out how many people said yes you would need to divide 400 by 10 which would equal 40 then times 40 by 8 which comes to 320. To establish how many people sai...
MC
Answered by Megan C. • Maths tutor
5350 Views

Solve the following set of simultaneous equations: 3x + y = 11, 2x + y = 8

First I will explain the scenario and clearly describe what exactly the question is asking us to do: in this case, we have to find the correct value of 'x' and 'y' that successfully agree with both of the eq...
SS
3817 Views

Heather invests £900 for 3 years at 2% per annum compound interest. Calculate the value of her investment at the end of the 3 years.

At 2% interest rate, we can multiply the amount by 102% for each year (100% + 2%). Each of the 3 years have to be calculated individually as follows: Year 1: 900 x 102% = 918 Year 2: 918 x 102% = 936.36 Year...
ZH
Answered by Zoe H. • Maths tutor
4428 Views

Expand 3(5a-2)

A) 15a - 2 B) 8a - 2 C)9a D)15a - 6 D is correct - multiply each term in the bracket by what is outside the bracket. The other 3 answers show different mistakes, identifying the different areas of improvement.
AJ
Answered by Alex J. • Maths tutor
7163 Views

Solve for x : 2x-15=-2x-7

Bring the x terms onto one side of the equation, and the numbers onto the other, rearranging to get 4x=8divide both sides by 4 to get x=2check answer by subbing x=2 into the equation, such that -11=-11
JP
Answered by Jack P. • Maths tutor
4381 Views