exam Maths Puzzle Numerical Ability

Please help me with this problem:

Simplify the expression:

sqrt (x) times ^3 sqrt (x)

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exam Other Question

A triangle has an area of 28 square inches. The base of the triangle is 6 inches less than twice the height. What is the length of the base of the triangle? find the value of Y so that the line through (-2,-1) and (10,y) is perpendicular to the line through (6,-2) and (5,7)

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