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Calculate the angle x in the following diagram. The area of the square is 16cm squared and the total area is 36.6cm squared.

This question was very difficult to explain through words; if it were to be used in a question paper, it would be presented as a diagram. I intend to use the whiteboard during the inteview to explain both th...
DP
Answered by Daniel P. • Maths tutor
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Solve the simultaneous equations: 3x + 2y =4 4x + 5y =17

You are trying to find out the value of 'x' and the value of 'y'. This means that you need to be able to take away one equation from the other. 3x + 2y = 4 - we are going to times this equation by 4 = 12x + ...
EW
Answered by Ellie W. • Maths tutor
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A stone, of mass m, falls vertically downwards under gravity through still water. At time t, the stone has speed v and it experiences a resistance force of magnitude lmv, where l is a constant.

A stone, of mass m, falls vertically downwards under gravity through still water. At time t, the stone has speed v and it experiences a resistance force of magnitude lmv, where l is a constant. QUESTION: a. ...
RH
Answered by Ronan H. • Maths tutor
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How do you solve the following simultaneous equations? 5x+6y=3 2x-3y=12

5x+6y=3 2x-3y=12 6y=3-5x 2x=12+3y 3y=2x-12 Therefore, 6y=2(2x-12)=4x-24 4x-24=3-5x 9x=27 x=3
SI
Answered by Sathana I. • Maths tutor
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I don't understand chain rule for differentiation especially when combined with more complex functions.

The chain rule is a method that allows you to differentiate a function of a function, which can be of the form y = f[g(x)]. That is, g is a function of x and f is a function of g, which in turn is a function...
AS
Answered by Adamos S. • Maths tutor
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