Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
- 
Answer: A
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The life expectancy E, in solar lifetimes, of certain stars depends on their mass M, in solar masses. The relationship is
.
As mass increases, life expectancy decreases. What can you say about the rate of decrease? A graph of E versus M can help you answer this question.
?
A. Life expectancy decreases at a decreasing rate. B. Life expectancy decreases at an increasing rate. C. Life expectancy reaches a point of inflection. D. None of the above.
Solve the problem.For what values of m does the function y = aemx satisfy the equation y" - y' - 42y = 0?
A. m = 1, 42 B. m = -6, -7 C. m = -6, 7 D. m = 6, 7
Simplify the expression.
3
A. - 
B. 
C. 
D. -27
Determine whether the ordered pair is a solution of the system of linear equations.(5, -1), 
A. Yes B. No