exam Maths Puzzle Numerical Ability

17) The length of a rectangle is 3 cm more than 2 times its width. If the area of the rectangle is 99 cm^2, find the dimensions of the rectangle to the nearest thousandth.

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exam Other Question

Factor by grouping:
3cd � 6cy + 2xd � 4xy
which one of these is it?
1. (3c + 2x)(d + 2y)

2.(d � y)(3c + 4x)

3. (3c + 2x)(d � 2y)

4.prime I am stuck on correct answer for:

if the width of a rectangle is one-third of its length and its length is 12, what is the area of the rectangle?

I am not using any specific book. I am just practicing..