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Given that y r 1 2 x , complete this table of values. x 1 2 5 10 y 1

y=k/x 2 yx 2 =k 1*10 2 =k k=100 x=1 y=100 x=2 y=25 x=5 y=4 x=10 y=1
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Answered by Savannah H. • Maths tutor
7482 Views

solve the equation 4cos^2(x) -15sin(x) = 13

We first want to get every term in terms of the same variable, namely sin(x). to do so, we will use the identity sin^2(x) +cos^2(x) = 1 to get: 4(1-sin^2(x)) -15sin(x) -13 = 0. which we can then rewrite as: ...
MG
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write 2/(3+root(5)) in the form a + b*root(5), where a and b are rational numbers.

You would first multiply the expression by (3-root(5))/(3-root(5) - which equals 1 - to get (6-2root(5))/14 which then equals 3/7 - (1/7)*root(5) and you are done.
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Answered by Max G. • Maths tutor
6005 Views

Is it easier for organisms to live on land or in the sea?

This is a question I commonly use when giving interview practise for potential Oxbridge students. A question like this doesn't have to have a corrrect answer necessarily, but should evoke a discussion and an...
FS
5668 Views

Which French verbs take 'etre' and which take 'avoir' in the perfect tense?

Luckily, there is an easy way to remember which verbs take 'être' and which take 'avoir' in the perfect tense. You just need to learn the following acronym: M - mourir R - retourner S - sortir V - venir A - ...
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Answered by Isobel T. • French tutor
5456 Views