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((2x + 3)/(x-4)) - ((2x-8)/(2x+1)) = 1

x=0.81

AS
Answered by Amelia S. Maths tutor
2772 Views

A 10kg cube of iron with length 5cm is resting on a table surface. Assuming the acceleration under gravity of the block is 9.81ms^(-2), what is the pressure on the table?

Pressure is given by P=F/A, where F is force and A is area. Neither are given in the question, but A is the area of the cube in contact with the table; this is the area of one face of the cube, so A=L...

WH
Answered by William H. Physics tutor
3341 Views

You are shown a diagram of a right angled triangle, with the hypotenuse labelled c and the other sides labelled a and b. If a is 7m long and c is 10m long, what is the length of b?

A simple implementation of Pythagoras' Theorem a2+b2=h2, and as in the question c is the hypotenuse, a2+b2=c2. (Side Note - in exams, the ...

WH
Answered by William H. Maths tutor
3902 Views

Explain how DNA replicates inside a cell

DNA is made up of 4 bases (Adenine, Thymine, Guanine, Cytosine)

Adenine, guanine = purine 'Pure AGony'

Thymine and cytosine  = pyramidines

Adenine pairs with thymine (2 Hydrogen bonds...

CD
Answered by Claire D. Biology tutor
3202 Views

What role does the ITCZ play across different tropical climates?

Tropical Climates can essentially be split into three main categories: Equatorial, Tropical Savanna and Monsoon.

Whilst each of these are hot and Equatorial/Monsoon climates are notably wet, there ...

GH
Answered by George H. Geography tutor
20002 Views

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