Solve the simultaneous equations (1) 2a - 5b = 11 (2) 3a + 2b = 7
(1)x2 4a - 10b = 22(2)x5 15a + 10b = 35(1) + (2) 19a = 57a = 3sub a = 3 into (1)2(3) - 5b = 116 - 5b = 11-5b = 55b = -5b = -1
HC
Related Maths GCSE answers
All answers ▸Prove that the square of an odd number is always one more than a multiple of 4
In the isosceles triangle ABC, AB=AC and angle B=(3x +32)degrees and angle C=(87-2X)degrees
Let f(x) = x^2 - 1. A vertical translation of 3 and a horizontal translation of -2 is applied. Write the new function g(x) in the form g(x) = ax^2 + bx + c
A gym has 275 members. 40% are bronze members. 28% are silver members. The rest are gold members. Work out the number of gold members.