exam Maths Puzzle Numerical Ability

Geometry. A triangle has sides 3x +7, 4x-9, and 5x +6. Find the polynomial that represents its perimeter.

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exam Other Question

He there im stuck on a problem I cant figure out.

Simplify by removing a factor equal to 1

8y^5 z^3 /
4y^9 z^4
Please help to solve :

If one gallon of stain covers 350 square feet, what is the least number of gallons of stain you need to cover the floor of a rectangular deck that is 25 feet long and 16 feet wide?