Simplify the expression. (Assume that r, s, and t are positive.)
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What will be an ideal response?



Mathematics

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Fill in the blank with the correct symbol <, >, or =, to make a true statement.    4.5

A. < B. > C. =

Mathematics

Solve the problem.The amount of a certain radioactive isotope present at time t is given by  grams, where t is the time in years that the isotope decays. The initial amount present is 400 grams. How many grams remain after 20 years? Round to the nearest hundredth.

A. 379.25 g B. 397.87 g C. 234.78 g D. 681.48 g

Mathematics

Provide an appropriate response.Consider the linear equation in three variables x - y + z = 3. Find a pair of linear equations that, when considered together with the given equation, will form a system having infinitely many solutions.

What will be an ideal response?

Mathematics

Convert to scientific notation.0.00000018309

A. 1.8309 × 106 B. 1.8309 × 107 C. 1.8309 × 10-6 D. 1.8309 × 10-7

Mathematics