3a + 5b - 4a + 2b = *
7a
23ab
a + b
-a + 7b...
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The area of a circle is equal to 1 dm². find the radius of the circle.
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Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.
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Simplify the expression 8h - 57-3m by adding or subtracting the like term
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What is the exact volume of the cone? (height is 9 cm, the radius is 15 cm)
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