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Find the inverse of the function g(x)=(4+3x)/(5-x)

For simplicity first rewrite as y=(4+3x)/(5-x). Now swap any x for a y, and any y for an x. This leaves the equation x=(4+3y)/(5-y). Our goal is to make y the subject of the formula. Multiply both sides b...

Answered by Martin M. • Maths tutor

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There are 60 students on a school trip. Each student is either one of, vegan, gluten free, or neither. 27 students were girls. 9 girls were gluten free. 21 students were vegan. 8 boys were vegan. 4 boys were gluten free. How many boys had no dietary's?

Answered by Ella C. • Maths tutor

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What is the difference between the xylem and phloem?

the xylem transports water and minerals the plants need. water is taken up from the roots normally and is needed at the leaves. so the direction of flow in the xylem is only upwards. also is made of dead ...

Answered by Najma A. • Biology tutor

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If populations of species become isolated, new species are more likely to develop. Explain why. (2 marks)

The organisms are unable to exchange genes outside of the isolated population. There may be different selective pressures which the organisms must adapt to. This means the features of the species may chan...

Answered by Hannah M. • Biology tutor

2371 Views

How do you factorise?

Factorising is taking an expression of some sort and simplifying it down to its component parts so that they are presented in the simplest way possible. For example, take the expression (15pq + 10pqr). Fi...

Answered by Karan P. • Maths tutor

2897 Views