exam Maths Puzzle Numerical Ability

A crystal in the shape of a cube is growing in a laboratory. Estimate the rate at which the surface area is changing with respect to the side length when the side length of the cry

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exam Other Question

A picture 11 inches by 15 inches is to be mounted on a piece of matboard so that there is an even amount of mat all around the picture. How wide will the border be if the area of the mounted picture is 285 square inches? Simplify
(5^3)^-8
Type exponential notation with positive exponents