exam Maths Puzzle Numerical Ability

Find the sum or difference. -1 2/3 - ( -1 4/11 )

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exam Other Question

c. the instructions says to determine whether the pair of lines are parallel, perpendicular or neither

2x+3y=1

4x-5y=2

can you show me step by step how to determine whether these are parallel or perpendicular or neither.

thanks A rectangle is three times as long as it is wide. If its length and width are both decreased by 2 cm, its area is decreased by 36 cm (squared). find its original dimensions.