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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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Write a balanced chemical equation for the complete combustion of pentane.

First it is important to know the molecular formula for pentane and the products of the combustion reaction so that we can write the unbalanced equation. From the prefix 'pent' we know that the hydrocarbon c...
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Answered by Sara B. • Chemistry 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 + ...
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Answered by Ellie W. • 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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What is a "prayer of intercession"? provide an example.

A prayer of intercession is any prayer that asks God to intervene in something for instance relatives of someone with cancer could pray for God to make their family member better.
GP
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