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How do you solve a simultaneous equation such as x+2y=10 and 3x+2y=18?

To solve simulatenous equations there are two main methods, substitution and elimintion. The first method requires the principle where if x is equal to a number, say x=2 then we can substitute this in, for e...
KR
Answered by Katie R. • Maths tutor
5719 Views

Describe why the Mormons were disliked. (1830s)

Christians disliked the teaching of the Mormons and most people were against the view of having more than wife as being acceptable. Mormons generally cut themselves off from ordinary society, and some Mormon...
IW
Answered by Isla W. • History tutor
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make y the subject of this expression p = ((x+y)/5)^1/2

To maintain the equality everything that is done to one side needs to be done also to the other. First, we square both sides to get rid of the power on the right-hand side. What we get is p^2 = (x+y)/5. Now ...
GS
Answered by Giorgia S. • Maths tutor
3227 Views

Solve 4 + 3(2x - 5) = x + 9.

4 + 3(2x - 5) = x + 9, 3(2x - 5) = x + 5, 6x - 15 = x + 5, 5x = 20, x = 20/5, x = 4
MC
Answered by Megan C. • Maths tutor
7264 Views

Simultaneous questions: 2x+y=7, 3x-y=8

First of all, you want to get both of the questions equating to y as this is a common factor between the two equations. SO y=7-2x and 3x-8=y As both of the equations are equal to y, we can set them equal to ...
BJ
Answered by Bronnie J. • Maths tutor
3539 Views