Use the properties of logarithms to evaluate the expression.10log t
A. 10t
B. t
C. 10t
D. 1
Answer: B
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Solve the problem by using two equations with two variables.Dmitri needs 6 liters of a 20% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 48% solution and the other an unlimited supply of the 6% solution. How many liters of each solution should Dmitri use?
A. 48% solution: 2.5 liters; 6% solution: 3.5 liters B. 48% solution: 1.5 liters; 6% solution: 4.5 liters C. 48% solution: 2 liters; 6% solution: 4 liters D. 48% solution: 4 liters; 6% solution: 2 liters
Solve the equation.45 - 3x = 
A. {128}
B. {3}
C. {-3}
D. 
Find the zeros for the polynomial function and give the multiplicity for each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around, at each zero.f(x) = 
4(x + 5)3
A. - 
, multiplicity 4, crosses the x-axis;
-5, multiplicity 3, touches the x-axis and turns around
B. 
, multiplicity 4, crosses the x-axis;
5, multiplicity 3, touches the x-axis and turns around
C. - 
, multiplicity 4, touches the x-axis and turns around;
-5, multiplicity 3, crosses the x-axis.
D. 
, multiplicity 4, touches the x-axis and turns around;
5, multiplicity 3, crosses the x-axis.
Find a set of parametric equations for the conic section or the line.Ellipse: Center: (5, -3); Vertices: 6 units above and below the center; Endpoints of Minor Axis: 2 units left and right of the center.
A. x = 2 + 5 cos t, y = 6 - 3 sin t B. x = 5 - 2 cos t, y = -3 - 6 sin t C. x = 5 + 6 cos t, y = -3 + 2 sin t D. x = 5 + 2 cos t, y = -3 + 6 sin t