book Maths Puzzle Numerical Ability

draw the graph of the linear equation 2/3x-1/4y=2

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In the literature typically when dealing with positive definite matrices there is the added assumption of symmetry. If the matrix is not symmetric, but is such that all lea You are buying flowers to hand out at a school dance. Roses cost $30 for a dozen but cost more if bought individually. With the money you have, you can buy 7 dozen and 4 single roses, or 64 single roses. How much is one rose? How much money do you have?