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Solve the simultaneous equations for x and y: 2x - 3y + 4 = 0 , x - 2y + 1 = 0.

Simultaneous equations can be solved either by substitution or elimination. Solving this by elimination:2x - 3y + 4 = 0 (1)x - 2y + 1 = 0 (2)To eliminate x, we can multiply both sides of the second equati...

BR
Answered by Benjamin R. Maths tutor
5460 Views

How does genetic variation occur in meiosis?

There are three ways that the cells produced in meiosis are different from each other and from the parent cells:1) Independent assortment: this is the idea that during metaphase 1 and 2 pairs of homologou...

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Answered by Amy L. Biology tutor
6421 Views

What experience do you have of working in with healthcare professionals

Medical schools love it if you have work experience in a hospital, a GP and regular voluntary work (care home etc). In order to sort these out, email people with your CV and a cover letter and they will l...

AS
1229 Views

8 pens in a bag, 3 blue, 5 red. 2 taken out at random, without replacement. Probability they are the same colour?

Either both blue or both red. 'OR' rule - add probabilities.Blue - first blue and second blue - 'AND' rule - multiply probabilities. 3/8 x 2/7 (as not replaced) = 6/56 = 3/28 (multiply top and bottom)Red ...

AS
Answered by Amy S. Maths tutor
2810 Views

A-Level question: How is blood glucose regulated?

Blood glucose must be regulated, normal blood glucose for a non-diabetic person is 4.0-5.9mmol. A low blood glucose (sugar) is harmful and a high blood can indicate diabetes. the pancreas and liver and cr...

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Answered by Erin J. Biology tutor
2868 Views

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