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A group of 55 students were asked if they had a cat or a dog. 11 were known to own both, 18 said they owned only a dog, and 34 said they owned at least a cat. Give the probability that a student has neither as a fraction in its simplest form.

ANSWER = 3/55

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Solve the simultaneous equations: 3x+y=11 and 2x+y=8.

First we want to eliminate of one these variables in order to solve the equations. We need to identify which variable has the same coefficient- in this case, it is y. So, we subtract the two equations fro...

Answered by Simran K. • Maths tutor

5931 Views

Discuss the differences between DNA and RNA. (4 pts)

Although DNA and RNA are practically identical, there are a few key differences between the two molecules. Function: DNA stores long-term genetic information and transmits genetic information to ma...

Answered by Sophie K. • Biology tutor

1748 Views

How do I construct my line of argument and paragraph points for my AO1?

When posed with the question, think about the answer carefully. What do you actually think? If the question was about the presentation of love in Othello, then think about how you think love is p...

Answered by Poppy T. • English Literature tutor

6176 Views

How can you determine what the direction of the shift is in the Bohr effect?

Haemoglobin acts as the Oxygen transportation system for the body. It is comprised of 4 polypeptide chains (quaternary protein structure) and each chain has an attached haem group. Each haem group allows ...

Answered by Charlotte L. • Biology tutor

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