Search our library of Maths GCSE questions

Top answers

Maths

GCSE

Solve the simultaneous equations. 2x + y = 18, x−y=6

In this question, we are going to find the values of x and y from the equations above. To start off, we will number the equations:(1): 2x+y=18(2): x-y=6now we will add (1) to (2) as that will get ride of...

Answered by Ruby R. • Maths tutor

3925 Views

What is a good rule to find angles in a right angled triangle?

In any right angled triangle, for any angle:The sine of the angle = the length of the opposite side the length of the hypotenuseThe cosine of the angle = ...

Answered by Shirley F. • Maths tutor

2954 Views

2x + y = 18; x−y=6

This is an an example of simultaneous equations, no single equation can give us the answer. Were going to use the substitution method. We will call this equation 1: 2x + y = 18, and this equation 2: x-y=6...

Answered by Tamara A. • Maths tutor

4022 Views

Steve wants to put a hedge along one side of his garden. He needs to buy 27 plants for the hedge. Each plant costs £5.54 Steve has £150 to spend on plants for the hedge. Does Steve have enough money to buy all the plants he needs?

5.54 x100 = 554 554 x 27 = 3878 + 11080 = 1495814958 / 100 = 149.58 149.58 < 150 Therefore Steve does have the money to buy all 27 plants.

Answered by Vrinda N. • Maths tutor

5215 Views

How find the values of x when x^2+8x+16=0?

We can find the values of x for this equation in several ways, we can either use the quadratic formula, complete the square, or see if the equation will factorise. For x^2+8x+16, we will first see whether...

Answered by Edward S. • Maths tutor

6683 Views