exam Maths Puzzle Numerical Ability

how do you write 2.78 x 10^7 in standard notation?

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exam Other Question

Maximize the objective function C = 3x + 2y with the constraints x + 2y <-4, x - y <- 1, x >- 0, y>- 0. Help solving this problem; y-2-8 sqrt(y-2) +15= 0