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How do you convert fractions to decimals? For example. Convert 13/20 to a decimal.

One way to convert fractions to a decimal is to divide the top number by the bottom. However with fractions like this, it is not easy to do without a calculator. So, you must use another method. Since dividi...
CS
Answered by Claudia S. • Maths tutor
6391 Views

Differentiate f(x) = x sin(x)

In this question, we have the product of two separate terms, so we will choose to use the product rule for this question. Recall, for f(x) = u(x) v(x): f'(x) = u'(x) v(x) + u(x) v'(x). Here, we can set u(x) ...
AS
Answered by Andrea S. • Maths tutor
3287 Views

Expand these brackets 3x(x - 2)

3x(x-2)You do 3x times everything in the bracket so 3x * x = 3x 2 and 3x * -2 = -6x (negative * a postive = a negative)Then combine the two to give you 3x 2 - 6x
OF
Answered by Olivia F. • Maths tutor
8442 Views

Here are the first four terms of a quadratic sequence: 11 26 45 68. Work out an expression for the nth term.

Firstly we must count the values between each of the terms to find the first differences. (EG- 26-11=15, 1st differences: 15,19,23)Next we need to count the values between each of the first differences to fi...
DC
Answered by Daniel C. • Maths tutor
15303 Views

Solve the equation (3x**2 + 8x + 4) = 0

x = -2 x = -2/3
TP
Answered by Tamsin P. • Maths tutor
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