Search our library of homework questions

Top answers

All subjects

All levels

What is a box-plot diagram?

(In session I would begin by drawing a box-plot diagram and seeing if a student can also covert their data into a box-plot)There are 5 key points to a box-plot. You have the minimum value, lowest quartile...

Answered by Will W. • Maths tutor

3107 Views

f(x)= 5 - x and g(x)= 3x + 7. Simplify f(2x) + g(x-1) (2018 past paper question)

If f(x)= 5 - x then f(2x)= 5 - 2x If g(x)= 3x + 7 then g(x-1)= 3(x-1) +7 = 3x - 3 + 7 = 3x +4
So f(2x) + g(x-1) = 5 - 2x + 3x + 4 = 9 + x

Answered by Jess B. • Maths tutor

3503 Views

Explain why graphite conducts electricity in terms of structure and bonding.

Graphite has a giant covalent structure where each carbon atom is covalently bonded to three other carbon atoms. Each carbon atom also has one delocalised electron which can flow freely through the struct...

Answered by Jess B. • Chemistry tutor

13849 Views

Describe the trend in ionisation energies down group 1.

Ionisation energies decrease going down group 1, firstly since the number of shells in the atom increases so the atomic radius is increased. There are also more electrons between the positively charged nu...

Answered by • Chemistry tutor

3059 Views