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BaLLatris [955]
4 years ago
13

A rectangle has length x+9 and width 2x-1 what are the areas of the rectangle

Mathematics
1 answer:
AlekseyPX4 years ago
4 0
Area=l*w 

a=(x+9)(2x-1) <--- Use FOIL 

a=2x²-x+18x-9 
a=2x²+17x-9 

Hope I helped :) 
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<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Due to this, relations between variables, either direct(when both increase or both decrease) or inverse proportional(when one increases and the other decreases, or vice versa), can be built to find the desired measures in the problem, or equations to find these measures.

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