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Using the following quadratic equation, find x: x2 + 3x -4

x 2 +3x -4. (x + a) (x - b) x has no co-efficient so each is 1 x. next find two numbers with a product of -4 and a sum of +3. cannot be 2,2 as these numbers have a sum of -4, 0 or +4 depending on whether the...
JC
Answered by Jake C. • Maths tutor
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How to construct and structure an essay

Writing an essay under a constrainted time can be daunting at first, however, it is crucial to know that one should spend at least 20 percent of their time to construct an essay plan before writing; this can...
JW
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Distinguish between eukaryotic and prokaryotic cells

Eukaryotic Cell - DNA with proteins; DNA surrounded by membrane; Has mitochondria; 80S Ribosome; Reproduces by mitosis; Membrane-bound organelles; Chromosome are linear; Larger in size Prokaryotic Cell - DNA...
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Answered by Jason W. • Biology tutor
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Distinguish between global climate change and the enhanced greenhouse effect

The most crucial difference between global climate change and the enhanced greenhouse effect is that the latter is a result of anthropogenic causes. The enhanced greenhouse effect is the increasing amount of...
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Answered by Jason W. • Geography tutor
12924 Views

Alice drops an apple from a height of 2 m above the ground. Assuming there is no air resistance, what is the speed of the apple when it hits the ground?

Since there is no loss of energy to air resistance and the apple is freely falling under the influence of gravity, this is an example where we can apply the principle of conservation of energy. In the initia...
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Answered by Oana D. • Physics tutor
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