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Core 1 question: Draw the graph "y = 12 - x - x^2"

I always found drawing graphs one of the hardest parts of maths - especially in C1 where you cannot use a calculator to help you. So, I used some simple rules to find key parts of the graph which would simpl...
TH
Answered by Tess H. • Maths tutor
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What was the process of the Meelson and Stahl experiment in proving the process of DNA replication?

The double helix structure of DNA was already proven by X-Ray diffraction, but the process of replication was still unknown There were 3 possible mechanisms: conservative, semi-conservative and dispersive PR...
AJ
Answered by Aran J. • Biology tutor
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Solve x^2 > |5x - 6|

We need to split the problem into two cases to remove the abs sign. Case 1: 5x - 6 >= 0, equivalent to x >= 6/5. In this case the problem is now to find the values of x that satisfy x 2 > 5x - 6. Re...
JH
Answered by James H. • Maths tutor
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There are 300 students at a school who have been asked to attend assembly. 1/10 students are sat on chairs, 85% of students are sat on the floor, the rest do not attend assembly. How many students did not attend assembly?

300 x 1/10 = (300/10) x 1 = 30 students sat on chairs 85% of 300 = (300/10) x 8.5 = (30 x 8) + (30 x 0.5) = 240 + 15 = 255 students sat on the floor Students who did not attend = 300 - 30 - 255 = 15
JD
Answered by Jonny D. • Maths tutor
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Answered by Adam L. • Maths tutor
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