Top answers

Solve the equation 4x + 2 = -5x + 20

Algebra is the enemy of many a student, but I'm here to show you that this (and many more concepts in maths!) really aren't that bad. For this problem, we need to group all of the like terms together, that i...
BJ
Answered by Ben J. • Maths tutor
6530 Views

How do I know when a quadratic function crosses the y-axis?

The key thing to remember here is that the y-axis is a straight line and all of the points that lie on it have the x-value of 0. This means that the curve crosses the y-axis when x=0 so you can substitute th...
SR
Answered by Scott R. • Maths tutor
7430 Views

What is a gene?

A gene is a section of DNA that codes for a specific protein.
BC
Answered by Bethany C. • Biology tutor
4710 Views

What is the difference between aerobic and anaerobic respiration?

Aerobic respiration takes place when oxygen is present, whereas anaerobic respiration takes place when oxygen is absent. Both processes take place in the mitochondria within the cells and releases energy.
BC
Answered by Bethany C. • Biology tutor
4540 Views

The first three terms of a sequence are a, b, c. The term-to-term rule of the sequence is 'Multiply by 2 and subtract 4'. Show that c = 4(a – 3).

As the answer is given in the question, it's really important that you lay out your working carefully to give a convincing account as to how you got from the question to the answer. Here we have a sequence. ...
RB
Answered by Robin B. • Maths tutor
13259 Views