exam
Maths Puzzle
Numerical Ability
Two jets leave Dallas and fly in opposite directions. One is flying 50 mph faster than the other. After 2 hours they are 2500 miles apart. Find the speed of each jet.
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exam Other Question
Simplify;
(27(^-2x) (25^x)^4 (3^6x)^1/2 all over 9^x(625^x-1)^-2
give the discriminant and use it to determine the number and type of solutions of the equation
3x^2 = 4x-5