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Evaluate to what extent primary effects of a Volcanic eruption are more significant than its secondary effects. (Can be either a 6, 8 mark question or 10 marks)

This is how i would try to get my students to write this answer- (8 to 10 Marks) Firstly I would ask the student to define what a primary effect is and what a secondary effect is. In this introduction I woul...
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Answered by Hannah C. • Geography tutor
22439 Views

When do two simultaneous equations have a solution?

This question was put to someone during their teacher training. This is a good question to ask, it is very important in maths to know that something you intend to study does actually exist. To explain the qu...
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Answered by Dylan D. • Maths tutor
3516 Views

8^(3/4)*2^(x) = 16^(4/5). Work out the exact value of x.

8 = 2^3 and 16 = 2^4. Substituting these into the above equation, we get 2^(9/4)*2^(x) = 2^(16/5). Using the laws of indices, we can derive the equation (9/4) + x = (16/5). In decimal form, this is 2.25 + x ...
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Answered by Katherine S. • Maths tutor
6470 Views

Make x the subject of the formula 4(2x-y) = 3ax - 5

4(2x-y) = 3ax - 5Step 1 - Expand 8x - 4y = 3ax - 5Step 2 - Collect like terms 8x - 3ax = 4y - 5Step 3 - Factorise x(8-3a) = 4y - 5Step 4 - Isolate x x = (4y - 5)/(8-3a)
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Answered by Adam S. • Maths tutor
3700 Views

When should I use the present subjunctive?

The subjunctive is a mood expressing the uncertainty or doubt of a speaker. To express this uncertainty, the speaker switches from the indicative (hablo/hablas/habla/hablamos/hablais/hablan) to the subjuncti...
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Answered by Alarice H. • Spanish tutor
2317 Views