If x:y=7:4 and x + y = 88, work out the value of x – y.
Total of parts: 7+4=11therefore if we divide 88 in 11 “parts” we get each part as 8.hence if x corresponds to 7 parts then x=8X7=56 and if y corresponds to 4 “parts” y=4X8=32THEREFORE: x-y=56-32=24
GH
Related Maths GCSE answers
All answers ▸Hannah's sweet problem (Edexcel 2015): There are n sweets, 6 are orange, rest of the sweets are yellow. She takes 2 sweets randomly without replacing them and the probability that 2 orange sweets are chosen is 1/3. Show that n^2-n-90 = 0.
In trigonometry , how do you find the angles of a right angle triangle?
Solve the following simultaneous equations: (1) 3x – 2y = 7 (2) 5x + 2y = 17
How do I graph linear inequalities?