Answers
>
Maths
>
GCSE
>
Article
Solve the simultaneous equations 3x + y = 23 and 4x + 4y = 52
3x + y =23, 4x +4y=5212x+4y=92, 12x+12y=1568y=64y=8sub in3x+8=23, 3x=15x=5y=8x=5
SB
Answered by
Samuel B.
•
Maths tutor
3767 Views
See similar Maths GCSE tutors
Related Maths GCSE answers
All answers ▸
Prove algebraically that (2n + 1)^2 – (2n + 1) is an even number for all positive integer values of n. (3 marks)
Make 'a' the subject of the formula: p = (3a + 5) / (4 - a)
Make y the subject of (y/x)+(2y/(x+4))=3
Using your knowledge that tan(x) = sin(x) / cos(x) , how would you write 4/7tan(x)