Solve the following simultaneous equations: 3x+y=11, 2x+y=8
x=3, y=2
RS
Related Maths GCSE answers
All answers ▸Factorise and solve x^2 - 8x + 15 = 0.
Make a the subject of a+3=(2a+7)/r
There are n sweets in a bag, 6 of which are red. The rest of the sweets are blue. Jen removes 1 sweet from the bag. Jen then takes another sweet from the bag. The probability that Hannah takes two red sweets is 1/3. Show that n²-n-90=0.
There are 300 passengers on a plane, 7/20 of them are men, 30% are women, the rest are children. Work out the number of children.