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The diagram shows the position of two ships, A and B, and a lighthouse L. Ship A is 5km from L on a bearing of 070° from L. Ship B is 3km from L on a bearing of 210° from L. Find the distance between A and B correct to 3.s.f.

(Draw diagram) From the diagram we can see that angle BLA= 210-70 = 140° . So for our triangle BLA we now have two sides and an included angle and we want to work out the length of the side opposite the a...

Answered by Callum S. • Maths tutor

19867 Views

Show that the lines A: y= 2x-5. and the line B: 2y-4x+3=0 are parallel.

If two lines are parallel they have the same gradient. line A is in the form y=mx+c where m is the gradient and c is the y intercept. Therefore, the gradient of A =2.Get B into the form y=mx+c to compare ...

Answered by Asha K. • Maths tutor

3712 Views

Find the co ordinates and nature of the turning points of the curve C withe equation, y=2x^3-5x^2-4x+2

Firstly, Differentiate the equation to find dy/dx. (dy/dx = 6x^2-10x-4)dy/dx shows the rate of change of the curve at a point, so at the stationary point dy/dx =0. So, put dy/dx = 0 and solve using factor...

Answered by Asha K. • Maths tutor

9508 Views

-3<n<1 n is an integer, write down all the possible values of n.

-2, -1, 0 M1 for 2 correct values, M2 for all 3 correct values

Answered by Zara B. • Maths tutor

13349 Views

Work out the value 125^(-2/3) (A* Exam Q)

Whenever you have a negative power always take the reciprocal or flip the base value i.e 125. So now it is 1/125 raised to the power of 2/3. By flipping it over the fractional index is no longer negative....

Answered by Preveina M. • Maths tutor

3804 Views