Answers
>
Maths
>
GCSE
>
Article
Solve the simultaneous equations: x2 + y2 = 20, 3x=2-y
x = -4/5 or 2
y = 22/5 or -4
IA
Answered by
Ishtiaq A.
•
Maths tutor
6667 Views
See similar Maths GCSE tutors
Related Maths GCSE answers
All answers ▸
(x+2)/(x-3) - (x-1)/(x+3) can be written in the form (ax+b)/(x^2-9). Work out the value of a and the value of b.
Integrate ∫_(-1)^1 3/√(x+2) dx using the substitution u x+2
Jo wants to work out the solutions of x^2 + 3x – 5 = 0 She says, ‘‘The solutions cannot be worked out because x^2 + 3x – 5 does not factorise to (x + a)(x + b) where a and b are integers.’’ Is Jo correct?
Claire drove from Manchester to London, it took her 4 hours at an average speed of 85 km/h. Matt drove from Manchester to London, it took him 5 hours. Assuming he took the same route as Claire and took no breaks, work out his average speed in km/h.