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Solve the simultaneous equations: 4x+y=25 and x-3y=16

Lets first give the equations names. 4x+y=25 (A) x-3y=16 (B) We want to get the equations so that they have either the same number of x's or same number of y's. So let's multiply equation (A) by three so tha...
MD
Answered by Michael D. • Maths tutor
10029 Views

You are given the function f(x)=x^3-x^2-7x+3, and that x=3 is a root of f(x)=0. Find the exact values of the other 2 roots. (6 marks)

First step is to realise that as x=3 is a root of f(x)=0, then we can use (x-3) as a factor of f(x). A really good method to use to find what (fx)/(x-3) gives is Synthetic Division. Using this method we then...
DH
Answered by David H. • Maths tutor
3801 Views

What is a neuron and its function?

The neuron is the basic working unit of the brain, a specialized cell designed to transmit information to other nerve cells, muscle, or gland cells. Neurons are cells within the nervous system that transmit ...
MB
Answered by Marie B. • Biology tutor
17961 Views

How do you say: I am going to the airport with my friends and we are flying to Germany tomorrow.

Ich gehe zum Flughaffen mit meinen freunden und wir fliegen morgen nach Deutschland.
MB
Answered by Marie B. • German tutor
7245 Views

How do you say: Hello my name is Javier and I have a younger sister and a younger brother who live at home with me and my parents.

Hola me llamo Javier y tengo una hermana y un hermano pequeno que viven en casa conmigo y mis padres.
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Answered by Marie B. • Spanish tutor
3298 Views