Solve the simultaneous equations 3x=2y and 2xy=12
Answer:x=-2, y=-3 or x=2, y=3
Explanation:We can rewrite 2xy=12 as (2y)x=12, and since we know that 2y=3x, we can substitute this in to get the following equation: 3x^2 = 12. Solving this we get that x=2 or x=-2, and subbing into 2y=3x, we get the corresponding y values of y=3 or y=-3
SS
Related Maths GCSE answers
All answers ▸write 36 as a product of its prime factors
What is differentiation and what does it actually mean?
A lorry can travel 35 miles per litre of diesel that costs £7.30 per litre. What is the cost in £ (to the nearest 2 decimal places) of the diesel used in driving the lorry 200 miles?
Tom is making gift bags, each of which will contain two balloons. He wants to hide a sweet in one of the balloons. 20 balloons cost £1.33, 15 sweets cost £2.05. What is the minimum he needs to spend to make 35 bags?