Simplify the expression. Assume that all variables are positive and write your answer in radical notation.
? 
A. 
B. 
C. 
D. 
Answer: D
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A hypothesis test is to be performed. State the null and alternative hypotheses.In a clinical study of an arthritis medication, 28% of those taking the placebo reported improvement. The manufacturer of the medication claims that among those taking the medication, the proportion reporting improvement will be higher than this.
A. Null hypothesis: proportion reporting improvement < 28% Alternative hypothesis: proportion reporting improvement > 28% B. Null hypothesis: proportion reporting improvement > 28% Alternative hypothesis: proportion reporting improvement = 28% C. Null hypothesis: proportion reporting improvement = 28% Alternative hypothesis: proportion reporting improvement > 28% D. Null hypothesis: proportion reporting improvement = 28% Alternative hypothesis: proportion reporting improvement ? 28%
Provide an appropriate response.Find all complex cube roots of z = 8i. Write each root in rectangular form.
A. 2i, 
- i, - 
- i
B. -2i, - 
- i, 
- i
C. -2i, 
+ i, - 
+ i
D. 2i, 
+ i, - 
+ i
Evaluate the expression.
?
?
A. 216 B. 48 C. 576 D. 168 E. 288
Find the value of the determinant.
A. -111 B. 71 C. -85 D. 111