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What was the short term significance of tanks and their usage in World War One?

The tank’s significance in World War One was primarily in its effect on the morale of people both on the front lines and at home. This psychological boost to the war effort came at a time when many were beco...
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Answered by Alex Y. • History tutor
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Describe the 3 types of solution to a quadratic equation

The behaviour of the solution depends on the value of the discriminant, D = b 2 – 4 ac, (aptly named as it allows you to discriminate between solutions) If D > 0: The equation has real roots (the parabola...
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Answered by George L. • Maths tutor
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What is the difference between a competitive and a non-competitive inhibitor?

Inhibitors are molecules that stop substrates from being able to bind to their enzymes, and therefore inhibit the action of specific enzymes. A competitive inhibitor is an inhibitor which has a similar shape...
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Answered by Sreya C. • Biology tutor
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For which values of x is the following inequality satsified: x^2 + 6x + 6 < 1

(I assume I can use the whiteboard in an actual lesson/interview) So this question might seem quite simple, and maybe it is, but this type of question can catch many students out. The first step is always to...
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Answered by Nabeel H. • Maths tutor
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Simplify: 2x + 6y + 2y - x

Collect like terms 2x - x +6y +2y 2. Simplify like terms 2x - x = x 6y+2y=8y 3. Write final answer x + 8y
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Answered by Noureen L. • Maths tutor
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