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Solve the simultaneous equations: 5x + y = 21, x - 3y = 9

Call '5x + y = 21' equation 1 and 'x - 3y = 9' equation 2. To solve this, we need the coefficients of x in both equations to be the same or the coefficients of y in both equations to be the same. Method 1 - ...
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Answered by Basil I. • Maths tutor
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Referring to HG Wells' 'Time Machine', how does the author in lines 12-25 of the extract use language and structure to show the narrator's thoughts and feelings about the people he meets? (Edexcel GCSE 2018)

One way in which Wells uses language to portray the narrator's sentiment about new people is by certain literary devices such as pathetic fallacy and alliteration. The narrator describes the 'warm air' aroun...
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Solve the equation 2(3x-5)=7

Firstly expand the brackets due to BIDMAS.6x-10=7Now we want to have x on its own side, so add 10 to both sides.6x=17Finally we want to solve to find x, so divide both sides by 6.x=17/6
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Answered by Will B. • Maths tutor
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Factorise 3x+12

We should start by looking for the highest common factor of the 2 numbers involved in the equation (3&12)If you cannot do this immediately in your head, create a factor tree or list the factors3: 312: 2,...
ET
Answered by Ellis T. • Maths tutor
12557 Views

how to compute the factorial of a number.

def factorial(n): fact = 1 for i in range(2,n+1): fact*=i; return factx=input("Enter a number :")print("The factorial of "+x+" is "+factorial(x))
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Answered by Niveda R. • Python tutor
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