Solve this simultaneous equation: 5n+t= 21 n-3t=9
5n+t= 21n-3t=9
n= 9+3t5(9+3t)+t= 2145+15t+t= 2145+16t= 2116t= -24t= -1.5
5n-1.5= 215n= 22.5n= 4.5
Related Maths GCSE answers
All answers ▸A game consists of 5 cups turned upside down, under one of the cups is a prize. 5 friend's pick a cup in turn and lifts it up, if they get the prize, they win , but if not, the cup is removed and the next friend picks. What position is it best to pick?
f(x) = 6x³ + 13x² - 4. Use the factor theorem to show that (x+2) is a factor of f(x)
Prove algebraically that the difference between the squares of any two consecutive odd numbers is always a multiple of 8
Solve the following for x: 2x^2-9x=5