Solve for k
k=3
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30=k\times 2.5\times 4
Calculate 2 to the power of 2 and get 4.
30=k\times 10
Multiply 2.5 and 4 to get 10.
k\times 10=30
Swap sides so that all variable terms are on the left hand side.
k=\frac{30}{10}
Divide both sides by 10.
k=3
Divide 30 by 10 to get 3.
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