Dhanu has a model railway. (a) He has a train that consists of locomotive and 4 coaches. The mass of the locomotive is 87 g
and the mass of each coach is 52 g.
i) Work out the total mass of the train.​

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

X2 + y 2 = 36 x + y = 6 solve the system of equations.

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36