Find all specified roots.Seventh roots of 1.
A. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
B. -1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
C. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
D. 1, cis 
, cis 
, cis 
, cis 
, cis 
, cis 
, -1
Answer: C
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Solve the system by elimination.
A. (-6.8, 2.4) B. (-1.2, 2.4) C. (-4, 2) D. (-3.4, 2)
Solve the triangle. If there is more than one triangle with the given parts, give both solutions.? = 16.6°b = 9.52a = 18.9
A. ? = 34.6°, ? = 128.8°, c = 26.0 ?' = 145.4°, ?' = 18.0°, c' = 10.3 B. ? = 7.3°, ? = 155.1°, c = 30.4 C. ? = 8.3°, ? = 155.1°, c = 28.4 D. ? = 9.3°, ? = 155.1°, c = 31.4
Graph the values of x that satisfy the conditions given.x ? - 
or x ? 2
A. 
B. 
C. 
D. 
Use the method of natural frequencies to find the indicated probability.A company manufacturing electronic components for home entertainment systems buys electrical connectors from three suppliers. It buys 21% of the connectors from supplier A, 38% from supplier B, and 41% from supplier C.It finds that 1% of the connectors from supplier A are defective, 2% of the connectors from supplier B are defective, and 3% of the connectors from supplier C are defective. If a customer buys one of these components and finds that the connector is defective, what is the probability that it came from supplier B?
A. 0.345 B. 0.02 C. 0.095 D. 0.528