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Solve the simultaneous equations 5x+2y=13 and x-2y=5.

5x+2y=13 + x-2y = 5 6x =18Firstly you need to either add or subtract one equation from the other. The way to decide this is to either focus on the x's or the y's. The trick to solving these simult...

Answered by Amy J. • Maths tutor

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What is the root of i? give all solutions

Z=cos(PI/4) +sin(Pi/4)
Z=cos(5PI/4) +sin(5Pi/4)

Answered by Rajan S. • Further Mathematics tutor

2028 Views

Explain and evaluate the ontological argument for the existence of God.

St Anselm's ontological argument defines God as being ‘that than which nothing greater can be conceived’. He bases his argument as being a reply to the fool who says there is no God (‘Fools say in their h...

Answered by • Religious Studies tutor

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Can I have advice on how to write a personal statement for creative or arts subjects?

Writing a personal statement can be daunting, but it is actually a great way to introspect on how your interests have developed. With creative subjects, such as arts and humanities, relaying your relevant...

Answered by Nina H. • Personal Statements tutor

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Give the IUPAC name of CH3CH2CH2CH2CH(OH)CN

First count the longest chain of carbons (6), therefore hexane.OH group is on the 2nd carbon, therefore 2-hydroxy.CN is a nitrile group.
Put together: 2-hydroxyhexanenitrile.

Answered by Meg P. • Chemistry tutor

6767 Views