Add or subtract. Then simplify. If a denominator has two or more factors (other than monomials), leave it in factored form. Express the answer using the denominator of the first fraction when applicable.
+ 
+ 
A. 
B. 
C. 
D. 
Answer: D
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Set up a definite integral that gives the arc length of the given curve.x = t, y = 
, - 
? t ? 
A. 
B. 
C. 
D. 
A hypothesis test is to be performed. State the null and alternative hypotheses.Last month the mean waiting time at a bank was 8.4 minutes. The manager has installed a new computer system and claims that people will no longer have to wait as long.
A. Null hypothesis: mean waiting time < 8.4 minutes Alternative hypothesis: mean waiting time = 8.4 minutes B. Null hypothesis: mean waiting time = 8.4 minutes Alternative hypothesis: mean waiting time < 8.4 minutes C. Null hypothesis: mean waiting time > 8.4 minutes Alternative hypothesis: mean waiting time < 8.4 minutes D. Null hypothesis: mean waiting time = 8.4 minutes Alternative hypothesis: mean waiting time ? 8.4 minutes
Find an equation of the inverse relation.y = -6x - 5
A. x = -6y - 5 B. y = -6x + 5 C. x = -6y + 5 D. y = -6 - 5x
Solve the system by graphing.
A. Dependent B. Inconsistent C. (1, 1) D. (1, 5)