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In the triangle XYZ XY = 5.6 cm YZ = 10.5 cm angle XYZ = 90 Work out the length of XZ

Triangle XYZ forms a right angles triangle, so pythagoras' theorem can be used to calculate the missing side. We are given the two side length adjacent to the right angle, so we need to find the hypotenus...

Answered by Miss H. • Maths tutor

7587 Views

How do you solve simultaneous equations?

There are two main methods for solving simultaneous equations. The first method is the elimination method. This method uses addition or subtraction of the two equations with equal amounts of 'x' or 'y' in...

Answered by Wei Shi H. • Maths tutor

3925 Views

(x-4)^3

=(x-4)²(x-4)=(x²-8x+16)(x-4)=x³-4x²-8x²+32x+16x-64= x³-12x²+48x-64

Answered by Pavel B. • Maths tutor

3134 Views

How do I find out the equation of a line?

First of all, we must remember the formula for the equation of a line.

This is y=mx+c.

It is important to understand what each part of the equation means:

Answered by Jessica B. • Maths tutor

2792 Views

Find the first derivative of f(x) = tan(x).

First, use the trigonometric identity tan(x) = sin(x) / cos(x) to rewrite the function. It should now be very apparent that f(x) is now actually a ratio of two functions, and therefore the quotient rule w...

Answered by Henry R. • Maths tutor

3168 Views