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Solve the Simultaneous equations '2x-3y=24' and '6x+2y=-5'

To solve you must make sure there are the same number of either x's or y's in both equations. We will call '2x-3y=24' equation 1, and '6x+2y=-5' equation 2. If you multiply equation 1 by 3 then you get '6x-9...
ES
Answered by Elena S. • Maths tutor
7765 Views

What is X-linked recessive inheritance?

Genetic diseases with an X-linked recessive inheritance pattern usually affect only the males in a family. These diseases are inherited via mutations on the X chromosome. Females have two X chromosomes and t...
TD
6701 Views

When should I use the present subjunctive in Spanish?

The subjunctive is a mood, rather than a tense. A verb is triggered into the subjunctive when expressing a wish, hope or desire. For example, "I want you to play the piano" becomes "quiero que...
HP
Answered by Henry P. • Spanish tutor
2835 Views

What is the difference in 'Est' and 'Et' when writing in French?

This seems like a very easy grammatical aspect but a lot of people have trouble with it. When speaking both these words sound the same which is why it can be very tricky when writing and using these. The bes...
IS
Answered by Isham S. • French tutor
59946 Views

Factorise x^2-7x+12

First write down all the factor pairs of 12 (1,12) (-1,-12) (3,4) (-3,-4) (6,2) (-6,-2). From these factors, find a pair that, when added together, is equal to -7. In this case the correct pair would be -3 a...
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Answered by Harry D. • Maths tutor
10486 Views