Solve.x2 + y2 = 20y2 = 2x + 17
A. (2, 
), (-3, 
), (2, -
), (-3, -
)
B. (1, 
), (-3, 
), (1, -
), (-3, -
)
C. (1, 
), (-2, 
), (1, -
), (-2, -
)
D. (1, 2
), (-3, 2
), (1, -2
), (-3, -2
)
Answer: B
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Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?A health researcher randomly selected 500 high school students from the city of Oak Grove. In a private interview the researcher asked the students whether they had ever used drugs. She concluded that only 8% of the high school students of Oak Grove have ever used drugs.
A. The source of the study B. The setting may discourage honest responses C. The wording of the question D. Participation bias E. Selection bias
Find the multiplicative inverse of the number.-23
A. 23
B. 
C. 1
D. - 
Simplify the rational expression.
A. 
B. 
C. 
D. 
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400