Top answers

What is the Subjunctive?

The subjunctive, despite sometimes being referred to as a tense, is in fact a mood. The reason for this is because it's used by speakers to express actions depending on certain factors. These factors can inc...
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Answered by Ned H. • Spanish tutor
2687 Views

How would you differentiate the term 3x^3-2x^2+x-10

With differentiation we should always begin with the "times by the power and take one from the power" rule. For example, to differentiate ax b --> (a x b)x (b-1) So, to differentiate this expres...
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Answered by Cathy E. • Maths tutor
4334 Views

Solve the simultaneous equation y+4x+1=0 and y^2+5x^2+2x+0.

x=-1/7 or -1/3 y=-3/7 or 1/3
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Answered by Sunkyu H. • Maths tutor
4103 Views

When should the imperfect tense be used in Spanish?

The imperfect tense should be used when: describing something one did in the past on a regular basis; setting the stage for another action (i.e. i was reading when he came in, leía cuando entró); or describi...
DF
Answered by Dan F. • Spanish tutor
2768 Views

What is the greenhouse effect?

The natural greenhouse effect is how the atmosphere works to absorb and reflect radiation to keep the Earth warm. The sun emits short wave radiation towards the Earth. The Earth's atmosphere absorbs this hea...
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Answered by Josie H. • Geography tutor
9901 Views