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Maths
GCSE

The exchange rate between dollars and euros(€) is €1 = $1.158 . (a) Felicity changes €4900 into dollars. Work out how many dollars she receives.

4900*1.158=5674.2/1Felicity receives $5670 (to 3sf)

AT
Answered by Alejandra T. Maths tutor
4766 Views

Naoby invests £6000 for 5 years. The investment gets compound interest of x% per annum. At the end of 5 years the investment is worth £8029.35 Work out the value of x.

The answer to the question can take a backwards approach. i.e. in order for you to make £8029.35 in 5 years from £6000, what does the yearly interest need to be.Since the interest is compounded, the yearl...

AL
Answered by Arlind L. Maths tutor
18689 Views

How do I solve a simultaneous equation?

In a simultaneous equation, you have tow unknown constants. For example: 2x + y = 18; x − y = 6. To find out the values of each, you first need to find one. You do this by getting one constant on its own ...

NL
Answered by Nat L. Maths tutor
2926 Views

How do you work out the mean of a set of numbers?

You find the mean of a set of data by adding up all of the values then dividing the number you get by the total numbers in the data. An example of this is: 'Find the mean of '6, 8, 9, 17' <...

EM
Answered by Erin M. Maths tutor
2719 Views

Complete the square for the quadratic expression x^2 − 8x + 7

As the coefficient (the number before) of x2 is 1 we can start the expression with (x...The coefficient of x is -8 so we half this to complete the brackets and form (x-4)2...Next the...

MB
Answered by Megan B. Maths tutor
4558 Views

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