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Simultaneously solve these equations 3x+y=7 and 3x-y=5

Method 1 (Elimination) - You can see that If you add the 2 equations together you can eliminate the y variable like so 6x=12, then if you divide both sides by 6 you get x=2. Then if you place x=2 back into e...
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Answered by Charlotte B. • Maths tutor
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Describe the components of the fluid mosaic model (6).

The fluid mosaic model describes the typical plasma membrane as a phospolipid bilayer (1), composed of phosphates with fatty acid tails, which face each other inwardly. Within the phospholipid bilayer are di...
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Answered by Gregor C. • Biology tutor
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Suppose a population of size x experiences growth at a rate of dx/dt = kx where t is time measured in minutes and k is a constant. At t=0, x=xo. If the population doubles in 5 minutes, how much longer does it take for the population to reach triple of Xo.

2.925 minutes This question involves solving a first order differential equation via the separation of variables and then substituting in initial conditions in order to find a particular solution. Something ...
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Answered by Scott W. • Maths tutor
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In one month, Karen takes the bus to school on 25 days. On 5 of these days the bus is late. What fraction of the days Karen takes the bus to school is the bus late? (Give your answer in the simplest form)

1/5 of the days.
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Answered by Libby S. • Maths tutor
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1. Polydactyly is caused by a dominant allele, D. The recessive allele of the gene is represented by d. Use one genetic diagram to show the inheritance of the polydactyly gene by R and S.

P generation Father (P) Mother(Q) Phenotype Polydactyly Normal Genotype Dd dd Gamete D d d d Fertilization Punnett Square for F1 generation F/M d d D Dd Dd d dd dd Phenotypic ratio: 1:1 Affected: Unaffected ...
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Answered by Suman C. • Biology tutor
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