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
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All answers ▸There are 11 counters in a bag. 8 of them red, 3 of them green. Neville takes 2 counters from the bag. Work out the probability that Neville takes one counter of each colour.
Find the equation of the straight line which passes through the point (0, 3) and is perpendicular to the straight line with equation y = 2x.
Expand and simplify: 5(x +y) + 3(4x-2y)
Factorise: 6x^2-3x-3=0