1) Blaise wants to put a wire fence on the three sides of his lot. If the total length of the wire is 80 meters, find the dimension of the lot that will enclose a maximum area. a) 20 by 40 m b) 25 by 32 m c) 16 by 50 m d) 10 by 80 m 2) If the square of the hypotenuse of an isosceles right triangle is 98 cm2, find the length of each side. a) 6 cm b) 7ccm c) 8 cm d) 9 cm 3) The diagonals of an isosceles trapezoid are represented by 4x-12 and 2x+16. What is the value of x? a) 12 b) 14 c) 28 d) 28 4) Find the possible value of e in the proportion (e − 5): (e − 3) = (e + 3): 20. a) 2 b) 3 c) 5 d) 7 5) If one of the roots of the quadratic equation x2 + 3x − 28 = 0 is 4, what is the other root? a) -1 b) 1 c) -7 d) 7

Grade 9 Math

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