exam Maths Puzzle Numerical Ability

Find the slopes of the asymptotes of a hyperbola with the equation y2 = 36 + 4x2.

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exam Other Question

The base -2 numeral 10111 is defined to be (-2)^4 +(-2)^2 +(-2)^2 + (-2)^1 + (-2)^0, which has a value 16 +4 -2 +1 or 19. Find the value of the base -2 numeral 11001.
Thanks for helping. Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday?