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Expand and simplify (x+4)(x-3)

We need to multiply out each bracket and it is best to do this systematically, multiplying each term in the left hand bracket by each term in the right hand bracket. (x+4)(x-3) = (X x X) + (X x -3) + (4 x X)...
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Answered by Eleanor M. • Maths tutor
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Within the systems life cycle, describe what events might take place in the Analysis stage.

The analysis stage of the systems life cycle is the stage in which a specification for a new system is created. In order to create this specification a range of sources may be considered including a question...
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Answered by Liam P. • Computing tutor
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There are 300 passengers on a plane, 7/20 of them are men, 30% are women, the rest are children. Work out the number of children.

300 x (7/20) = 300/20 x 7 = 15 x 7 = 105 = number of men on the plane. 300 x 0.3 = 90 (Or 300/10 x 3) = number of women on the plane. 105 + 90 = number of adults on the plane = 195. 300 - 195 = 105 = number ...
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Answered by Hannah T. • Maths tutor
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Explain the formation of fold mountains.

Fold mountains form at continental convergant plate bounderies. Here the two continental plates are being pushed towards one another by tectonic forces, powered by convection currents in the mantle. The plat...
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Answered by Jacob M. • Geography tutor
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Answered by Lisa P. • English tutor
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