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Solve the simultaneous equations: 2x - y = 1, 3x + y = 14

Make y the subject of equation 1:y = 2x - 1Substitute this value of y into equation 2:3x + (2x - 1) = 14Simplify:5x - 1 = 14Solve for x:x = 3Substitute this value of x into original equation:2(3) - y = 1S...

Answered by Stephen B. • Maths tutor

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solve simultaneous equations: 2x² + 3y² = 14 , x = 2y-3

x=1y=2
x= -29/11y=2/11

Answered by alasdair g. • Maths tutor

7525 Views

Explain how the increasing use of fossil fuels and changes in agriculture may have contributed to global changes in temperature.

The burning of fossil fuels releases CO2 into the atmosphere. This CO2 adds to the greenhouse effect as it blocks more heat from leaving the atmosphere, therefore increasing the temperature of the earth. ...

Answered by Kieran R. • Geography tutor

5107 Views

What is episodic memory? Give an example

Episodic memory is memory of our own personal experiences, an example of this would be a memory of your first day at secondary school.

Answered by Elizabeth S. • Psychology tutor

1910 Views

cuántas personas hay en tu familia? describe las características y los intereses de un miembro.

En mi familia hay cuatro personas. Hay mi madre, mi padre y mi hermana. También, tengo un perro y un gato. Mi hermana se llama Tilly, y tiene el pelo rubio, y es my alta, casi es tan alta como yo. Tiene d...

Answered by Charlie P. • Spanish tutor

2879 Views