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What is the value of an investment of £4500 with compound interest of 1.3% after six years?

We solve this by multiplying the starting value, £4500 , by 1 + {the interest rate expressed as a decimal} , or in this case, 1 + 0.013 . This gives us £4500 x 1.013 6 and when we type this into our calculat...
MC
Answered by Mark C. • Maths tutor
3829 Views

How do changes to the coefficient of x affect the graph y = f(x) as opposed to changes to the coefficient of f(x)?

If you change the coefficient of x, it will stretch or squash the graph in the x direction by the reciprocal of the factor that the coefficient is changed by. If you change the coefficient of f(x), then the ...
JB
Answered by Jesper B. • Maths tutor
9572 Views

How do you solve simultaneous equations

So let's use 2x + 5y = 11 and 3x - 5y = 4 as our example.In these equations we have 2 unknown variables, x and y which we are trying to work out. The numbers in-front of the letters are the amount of times w...
SC
Answered by Siobhan C. • Maths tutor
4780 Views

Find the gradient of the curve with the equation y = x^3+7x^2+1 at x=2

The equation of the line is y=x 3 +7x 2 +1To find the equation for the gradient of the line, we need to differentiateDifferentiating gives us dy/dx = 3x 2 +14xWe can now find the gradient of the curve at any...
CR
Answered by Charlotte R. • Maths tutor
4690 Views

Megan buys a car for £7,700 plus 20% VAT. She pays a deposit for the car and then pays the rest in 12 equal instalments of £642.50. How much did Megan pay as a deposit?

7700 x 1.2 = 9240 (total cost of car)12 x 642.5 = 7710 (total cost of instalments)9240 - 7710 = 1530Answer = £1,530
CD
Answered by Charles D. • Maths tutor
3377 Views