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Given X + 3Y = 19 and 2X - Y = 10, find X and Y

This is a simple simultaneous equationFirst we multiply the second equation by 3 to get 6X - 3Y = 30Then we add the first and second equation together to get 6X + X +3Y - 3Y = 30 + 19which we simply to 7X = ...
GV
Answered by Guillermo V. Maths tutor
3739 Views

Whats a useful tool for analysing the speaker of a text?

One nifty way of approaching this board topic is by focusing on how the speaker narrates by examining their writing style. An interesting line of enquiry is asking yourself: are the sentences they use simple...
CD
Answered by Charlotte D. English tutor
2863 Views

Make a the subject of the formula p = (3a + 5)/ (4 - a)

We start by multiplying both sides of the equation by (4 -a). We then expand the brackets "p.(4-a)" and end up with "4p - pa". We then gather the "a's" to one side of the equati...
JP
Answered by Juliana P. Maths tutor
5221 Views

Describe how you would test for the presence of glucose in fruits

firstly, macerate the fruit and add a few drops of clear blue Benedict's solution place in a hot waterbath to heat mixture for 5 minutesif glucose is present, the solution will turn from blue to a brick red ...
SL
Answered by Sinchana L. Biology tutor
15372 Views

Expand and Simplify (2x+3)(3x-3)

First, take the 2x and multiply each term in the second bracket by it to give 2x.3x=6x 2 and 2x.-3= -6x. Then multiply each term of the second bracket by +3 to give 3.3x= 9x and 3.-3=-9 . adding all the term...
CK
Answered by Charlie K. Maths tutor
7981 Views