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I'm struggling with quadratic equations

Quadratic equations can be tricky, to begin with, but once you get the hang of them they can become one of the best maths tools on offer to you. All quadratic equations with real roots can be solved with the...
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Answered by Ben W. • Maths tutor
3612 Views

Por or Para

Careful with this very common mistake! It may not seem like it will make a big difference, but it can, in fact completely change the meaning of what you are saying. Por is used for: 1) travel and communicati...
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Answered by Charlotte M. • Spanish tutor
4201 Views

Mutations can occur in DNA. Describe what effect a mutation can have on the function of an enzyme.

A mutation is a change in the DNA base sequence. This causes a change in the amino acid that is synthesised, and this could change the shape of the active site on an enzyme. The shape of the active site may ...
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Answered by Mahdia S. • Biology tutor
36806 Views

Sam takes out a £720 loan. Sam will have to pay back the £720 plus an interest rate of 15%. He will have to pay this back in 12 equal monthly instalments. How much must Sam pay monthly?

First, you must find out the total amount to pay back, this amount will be £720 + 15% of £720. To find 15% of £720, we first calculate 720/100 to find 1% and the multiply by 15: 720/100 = 7.2 *15 = 108. Now ...
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Answered by Samuel N. • Maths tutor
4718 Views

Explain why the verb ‘mettre’ in its past tense form as it appears in the following sentence “Il a décroché la casserole et l’a mise sur la table” has a feminine ending or terminaison (despite the auxiliary’s verb ‘avoir’’s neutrality)?

Generally the past participle doesn’t agree with any noun when the auxiliary verb ‘avoir’ is used. For example: ‘Elles ont acheté des bottes’ despite the subject ‘elles’ and the direct object ‘bottes’ being ...
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Answered by Clemency H. • French tutor
3911 Views