A student created an art piece that was made of a sphere with 10 cones connected to it. Which formula can be used to determine the volume of the entire art piece?

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answer is:

1.75 pounds

5+2x=a

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check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.