exam Maths Puzzle Numerical Ability

Divide the following:

x^+2x-15 over 4x^ divided by x^-25 over 2x-10

Thanks for any help you can offer.

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exam Other Question

Set up the initial simplex tableau for the following problem.

Minimize z = 10x1 + 15x2 + 6x3 subject to:

x1 + 5x2 + 7x3 � 40
4x1 + 3x2 + 2x3 � 60
x1 + 6x2 + 4x3 � 30 Find the value of $950 invested at 4.5% with interest compounded continuously for 5 years.
How many years will it take for a $160 investment to double in value if interest is comp