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There are 6 orange sweets in a bag of n sweets. Hannah picks two sweets at random without replacement, and they are both orange. Show that n^2-n-90=0

This is a multi step question that requires both good understanding of probability and maniuplating algebraic fractions.PROBABILITYThe first step is recognizing that as there are 6 orange sweets out of a tot...
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Answered by Ben N. • Maths tutor
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Solve the simultaneous equations. 2x + y =10 and x + y = 4

We should eliminate one of the variables. We do this by writing them on top of one another.3x + y = 10x + y = 4 - 2x = 6 We want to know what X is and what Y is. We currently know what 2x is so we divide the...
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Answered by Grace N. • Maths tutor
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What are the types and effects of genetic mutations?

Insertion/deletion - one or more nucleotide pairs are put in/taken out of a sequence -> causes frameshift. Duplication - one or more bases are repeated -> leads to frameshift. Inversion - group of base...
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Answered by Zofia K. • Biology tutor
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How does Orwell use 'allegory' in 'Animal Farm'?

It is always wise to open an answer on literary device with a definition. Allegory refers to a narrative or section of writing which 'conceals' or 'symbolizes' a parallel or secondary meaning. Then, refer to...
JL
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Durante tus vacaciones en España escribes un blog para describir tus experiencias. Menciona: • un día de las vacaciones cuando tuviste problemas • un festival en España en que te gustaría participar. Escribe aproximadamente 150 palabras en español.

En mi viaje a España, visité Málaga. Málaga es una preciosa ciudad en el sur de España. Estuve allí durante 10 días y me dio tiempo a hacer muchas cosas. En el primer día de visitas, fui a la playa a pasar e...
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Answered by Marta M. • Spanish tutor
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