Factor the trinomial by grouping.15x2 - 16xy + 4y2
A. (15x + 2y)(x + 2y)
B. (3x + 2y)(5x + 2y)
C. prime
D. (3x - 2y)(5x - 2y)
Answer: D
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Use scientific notation to solve the problem.Assume that the volume of the earth is 5 x 1014 cubic meters and the volume of a bacterium is 2.5 x 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 5.0 x 10-31 bacteria B. 5.0 x 1031 bacteria C. 2.0 x 1030 bacteria D. 2.0 x 10-30 bacteria
Use scientific notation to solve the problem.Assume that the volume of the earth is 5 x 1014 cubic meters and the volume of a bacterium is 2.5 x 10-16 cubic meters. If the earth could be filled with bacteria, how many would it contain?
A. 2.0 x 10-30 bacteria B. 5.0 x 1031 bacteria C. 2.0 x 1030 bacteria D. 5.0 x 10-31 bacteria
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.2 x + 7 = 8
A. {-4.00} B. {-0.24} C. {7.33} D. {1.18}
Solve the problem. Use 3.14 as the approximate value of ? unless otherwise instructed. Round to the nearest tenth unless otherwise indicated.A cubical container measures 6 m on each edge. What does it cost to the nearest penny to fill the container at $2.85 per cubic m?
A. $584.82 B. $51.30 C. $102.60 D. $615.60