exam Maths Puzzle Numerical Ability

A runner can run 100 yards in 9.8 seconds and 440 yards in 49 seconds. What is the ratio of her average speed in the 440 to her average speed in the 100?

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exam Other Question

How to slove matrice word problems and set them up, how to find an inverse of a martice, and the determinate of a matrice, by using the expanding rule, also how to create a martice 3a²b³-⅓)(3a²b³+⅓)



(4x-5y²}²



2(3x²-5y³)(2x²-7y³)