exam Maths Puzzle Numerical Ability

how long does it take for a airplane to travel 185 kms at a speed of 400 kms/h?

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exam Other Question

Simplify the rational expressions:

x^2-6x+5/x^2-25


x^2-9x+8/2x-4 divided by x^2-1/2x+2


Simplify:

sqrt[64x^10y^2z^46]


Perform the indicated operations:

4sqrt[18] + 2sqrt[32] - sqrt[8]
Please help with radical 12x^3/5. /12x^3/5 The entire equation is under the radical sign.