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Solve these simultaneous equations: 3x-5=-4y and 2xy=-4

First start with 2xy=-4, rearrange to find in terms of x, x=-2/y. Substitute this into the other equation (3x-5=-4y), producing -6/y -5 =-4y.Times every term by -y resulting in 6+5y=4y 2 .Rearrange to 4y 2 -...
AS
Answered by Amelia S. • Maths tutor
3741 Views

How to form the present tense? (regular)

Dependent on verb. There are 3 most common types of verbs in French, ending in -er, -ir, or -re. Kick off the endings and replace with... -Example verbs: -er: jouer (to play), crier (to shout, cry), avouer (...
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Answered by Sean H. • French tutor
2312 Views

A cyclist travels along a straight flat road. Describe the condition required for the cyclist to continue traveling along the road at a constant speed. How does this condition change if the cyclist travels up a slope?

On the flat straight road, the cyclist will travel at a constant speed if the work done by the cyclist is equal to the sum of the energy lost to air resistance by the cyclist and the frictional losses within...
HM
Answered by Hallam M. • Physics tutor
7418 Views

‘In the battle of the sexes, there are no outright winners.’ Consider some of the ways in which this remark might be applied to Chaucer’s presentation of gender in The Merchant’s Prologue and Tale.

[The Subject & Level bar would not let me choose A Level for some reason, so the question and answer I am providing is for an A Level student, despite the fact it is under the heading English Literature ...
AW
7009 Views

Describe how selective breeding could be used to improve the volume of milk produced by cows.

Calculating the milk yield of mother cows and their offspring can indicate which animals have good breeding genetics. Bulls also play an important role in generating a good milk yield, and their offsprings m...
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Answered by Saffron M. • Biology tutor
12311 Views