Top answers


A right-angled triangle has base 10cm and height 4cm. What is the area of the triangle?

The first thing we should note here is that we are looking for the area, so we need to recall the formula for the area of a right-angled triangle: Area = (base x height) / 2 Next we can input our values give...
KS
Answered by Kirsty S. Maths tutor
14366 Views

Find the set of values for which: 3/(x+3) >(x-4)/x

First we must consider for which values of x the equation: 3/(x+3) = (x-4)/x is undefined. In this case, x=-3, and x=0. Now we must consider each of the cases, x<-3, -3<x<0, 0<x Case 1 (x<-3):...
DM
6139 Views

What is the most important aspect of writing to persuade?

When writing to persuade, you need both fact and opinion. You need to offer your opinion and then present facts that give your opinion basis.
MR
Answered by Mary R. English tutor
4072 Views

Use the chain rule to differentiate y=(x-3)^(-3)

Hint: the chain rule states that for y=u(x) ^a, the derivative will be dy/dx = dy/du * du/dxSo we just need to find dy/du and du/dx!In this case u(x)=x-3, so du/dx = 1.from y=u^(-3), dy/du = -3u^(-4).This me...
RT
Answered by Rosemary T. Maths tutor
5801 Views

Solve the inequality x < 4 - |2x + 1|.

In order to deal with the modulus sign, we must take account of 2 possible cases: Case 1: |2x + 1| = (2x +1). In this case we can solve algebraicly, preserving the inequality sign, to get that x &lt; 4 -(2x ...
JC
Answered by Joe C. Maths tutor
8597 Views