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When do you use the imperfect/preterite past tense?

A good way to remember which form of the past tense to use is to think about when the action took place. The imperfect (with endings -aba and -ía) is used for continuous actions in the past, so you would use...
MG
Answered by Mary G. • Spanish tutor
2574 Views

Expand: (3x-1)(x+5)(4x-3)

(3x^2+14x-5)(4x-3)= 12x^3-9x^2+56x^2-42x-20x+15=12x^3+47x^2-62x+15
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Answered by William H. • Maths tutor
7966 Views

What is enjambment as a poetic technique and how should I talk about it in an exam?

With poetry, I always write something with my students which I refer to as a 'poetry bible'. This is a long list of poetic techniques, with examples, and the effects they often have. Enjambment is when the m...
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Answered by Imogen S. • English tutor
7164 Views

What is the difference between an endothermic and exothermic reaction?

(Using a diagram of energy changes) The simplest way of thinking about it is that exothermic reactions release energy, such as heat, to the surroundings whereas endothermic reactions absorb energy from the s...
CC
12690 Views

Explain how a recessive phenotype can be produced from two parents with a dominant phenotype

A recessive phenotype is produced when there are two copies of the same recessive allele e.g. aaA dominant phenotype is produced when there is at least one copy of a dominant allele e.g. Aa or AAA parent wit...
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Answered by Hannah Q. • Biology tutor
5268 Views