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Expand the brackets in the following expression and indicate what the graph would look like: y=(5x+1)(2x-3)

While this question is not in the style the examiners would ask, it demonstrates two important principles: how to expand brackets accurately and how to build intuition about the shape of graphs. Answer: y = ...
EE
Answered by Edward E. • Maths tutor
3667 Views

Define what market failure is and identify an example of market failure, explaining fully why it is a relevant example.

Market failure is defined as a misallocation of resources, and essentially entails that market forces are not operating effectively through the price mechanism to distribute goods and services from suppliers...
EE
Answered by Edward E. • Economics tutor
2321 Views

Reading paper: Your little brother has received a message from his French pen friend and he has asked you to translate it into English for him. Translate the following into English.

(Question continued) Sentences to translate for higher tier: Récemment, j’ai décidé de prendre une année sabbatique après le lycée puisque je voudrais avoir un peu de liberté. J'étudie des langues vivantes, ...
LP
Answered by Lizzie P. • French tutor
3303 Views

Two people who are heterozygous for retinitis pigmentosa are expecting a baby. Draw a genetic diagram to calculate the probability that the baby will have the condition. Use R for the normal allele and r for the allele for retinitis pigmentosa.

Parents Rr x RrPunnett Square Probability = 1/4
GM
Answered by Garry M. • Biology tutor
3256 Views

Calculate the mass of copper oxide required to produce 24.95 g of copper sulfate crystals (CuSO4.5H2O).

Given the equation for the reaction:CuO(s) + H2SO4(aq)-------> CuSO4(aq) + H2O(l) and the relative formula mass of the copper sulfate crystals Mr=249.5 and the relative atomic masses of O=16 and Cu=63.5Fr...
JH
Answered by Jessica H. • Chemistry tutor
13949 Views