This is the 2016 Grade 10 Math Challenge Elimination Level Questions with Answers – Part 1 with answers. Questions in the previous years can be accessed on the **Past Tests** page and all questions can be found in the** All Posts** page.

26.) Suppose an object is dropped from the roof of a very tall building. After *t* seconds, its height from the ground is given by where *h* is measured in feet. How long does it take to reach ground level?

27.) In *AC*= 10cm, *CD* = 7 cm, and *CE *= 9 cm. Find *BC*.

28.) Find a polynomial *P(x)* of degree 3 that has zeroes -2, 0, and 7, and the coefficient of x² is 10.

29.) Find the equation (in the form *ax* + *by* = *c*) of the perpendicular bisector of the line segment joining the points (1, 4) and (7, 2).

30.) The sides of a polygon are 3, 4, 5, 6, and 7 cm. Find the perimeter of a similar polygon, if the side corresponding to 5 cm is 9 cm long.

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