Multiply and simplify.( - 2)( - 3)

A.  - 3 - 2 + 6
B. 5 + 6
C.  +  + 6
D.  + 6


Answer: A

Mathematics

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Estimate the value of the quantity.The table gives dye concentrations for a cardiac-output determination. The amount of dye injected was  Plot the data and connect the data points with a smooth curve. Find the area under the curve using rectangles. Use this area to estimate the cardiac output.Time (sec)Dye concentration (mg/L)

A. 0.1 L/min B. 17.7 L/min C. 8.9 L/min D. 406.0 L/min

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Give a formula for a piecewise-defined function f for the graph shown.

A.
f(x) = 
B.
f(x) = 
C.
f(x) = 
D.
f(x) = 

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Identify the figure as a line, segment, or ray. Then use the correct symbol to name the figure.

A. line segment; 
B. line segment;
C. line; 
D. ray; 

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Using a calculator, evaluate the expression. Round the answer to four decimal places.cos(cos-1(-0.9372))

A. 0.9372 B. 0.4686 C. -0.4686 D. -0.9372

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