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Solve the simultaneous equation y+4x+1=0 and y^2+5x^2+2x+0.

x=-1/7 or -1/3

y=-3/7 or 1/3

Answered by Sunkyu H. • Maths tutor

3876 Views

What is the greenhouse effect?

The natural greenhouse effect is how the atmosphere works to absorb and reflect radiation to keep the Earth warm. The sun emits short wave radiation towards the Earth. The Earth's atmosphere absorbs this ...

Answered by Josie H. • Geography tutor

9478 Views

Describe the difference between a CPU and a GPU with relation to processing power and ability to perform tasks.

A CPU (Central Processing Unit) is comprised of a few large processing cores, each of which is capable of performing complicated tasks on its own. This added complexity also enables CPUs to be efficent

Answered by Zack S. • Computing tutor

1709 Views

Why does the pH of neutral water drop when it is left out in an uncovered container on a worktop for a long period of time?

This question tests your knowledge on; the properties of non-metal oxides in solution, the concept of equilibrium, pH.

Non-metal oxides such as (CO2, P4O10, SO2, etc) are acidic in solution. When l...

Answered by Narutoshi G. • Chemistry tutor

2798 Views

What are partial fractions for and how do I find them?

Being able to find partial fractions is very useful for complex algebraic fractions that cannot be intergrated in their current form. Breaking it down into a sum of it's partial fractions gives two (or mo...

Answered by Christine T. • Maths tutor

3954 Views