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3kg of meat costs £54, Nina buys 2 kg of the meat. Work out how much Nina pays. (non-calculator)

I used ratios in this context3kg : £54Using this ratio to work out the price of 2kg 2kg: £? To get from the number '3' to '2', I have to divide 3 by 3, then multiply it by 2So, using this same method (as ...

Answered by Phazilah R. • Maths tutor

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work out 20% of 14000

First work out 10% of 14000.You do this by dividing 14000 by 10 as this will than be a 10th of 14000 and therefore 10%14000 divided by 10 = 1400as the question asks for 20% you will need to add another 10...

Answered by • Maths tutor

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Ball P is shot at 18m/s horizontally from the top of a 32m mast. Ball Q is shot at 30m/s at an angle 'a' to the horizontal from the bottom of the mast. They collide mid-air. Prove that cos'a' = 3/5

Consider the positions of each ball as a function of time. Distance (position) is equal to velocity times time. We want 'cos' in the answer, so we'll work with the x axis. For ball P, the position is equa...

Answered by Andrew F. • Maths tutor

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Write 5x^2 + 30x + 36 in the form 5(x+A)^2+B where A and B are integers to be found.Then write the equation of symmetry for the graph of 5x^2 + 30x + 36

-Take factor of 5 out as seen in question.-Expand the brackets-Then draw a sketch of the graph -Then understand what type of graph it is and what it means about the line of symmetry.

Answered by • Maths tutor

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How do I work out the equation of a tangent line to a curve?

A tangent line to a point of a curve is the straight line which is parallel to the the curve at that point.The equation of any straight line has equation form : y-y_1 = m(x-x_1) where m is the gradient of...

Answered by • Maths tutor

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