Top answers

How do I work out the area of a rectangle

ok. Well think about a square. What times what creates the area of a square? Yes the bottom one and side on. So which do you think will be useful to know to find the area of a rectangle? Yes the same! So the...
CW
Answered by Charlotte W. • Maths tutor
4079 Views

What is the multiplication rule in probability?

If presented with an 'AND' statement, multiply the probabilites of each individual event happening by one another,If rolling a die, what is the probability of landing a 1 AND then a 21/6 * 1/6 therefore prob...
NJ
Answered by Nidhish J. • Maths tutor
4866 Views

Rearrange aq - ac = d

Start by factoring out the common term, so in this case a. a(q - c) = d Now divide by a on both sides to isolate the (q - c) (q - c) = d/a Now add c on both sides to make q the subject q = c + d/a
AS
Answered by Avnish S. • Maths tutor
5657 Views

A circle C with centre at the point (2, –1) passes through the point A at (4, –5).....

(a) Find an equation for the circle C. Before tackling a question like this it is always a good idea to draw a rough sketch of all the information that's given to you. The general equation of a circle is x 2...
BW
Answered by Brodie W. • Maths tutor
19142 Views

Express 3 cos θ + 4 sin θ in the form R cos(θ – α), where R and α are constants, R > 0 and 0 < α < 90°.

To find the value of R, use Pythagoras's Theorem using the coeffecients of cos θ and sin θ. The correct answer should be R=5. Expand the expression R cos(θ – α). Equate the expanded expression with 3 cos θ +...
AG
Answered by Anahita G. • Maths tutor
24508 Views