exam Maths Puzzle Numerical Ability

Find the length of the line segment whose endpoints are (-3, 4) and (5, 4).

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exam Other Question

To estimate animal population, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of Simplify. (Multiply)

( -5 {{{ sqrt x + sqrt y }}} )({{{ sqrt (x-4) sqrt (y)}}} )