Perform the indicated operations and simplify.(3x + 5y)(3x - y)
A. 9x2 + 12xy - 5y2
B. 9x2 + 12xy - 5y
C. 6x2 + 12xy - 5y2
D. 6x2 + 15xy - 5y2
Answer: A
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Use the guidelines to evaluate the study. Discuss flaws that you see in the study. The principal of Laney High School interviews all the seniors at his school and asks them whether they have ever used drugs. The principal of Little Heath High School interviews all the seniors at her school and asks them whether they have ever used drugs. The results suggest that Laney has a lower rate of drug use. A researcher concludes that the counseling program available at Laney High School is effective in lowering drug use.
What will be an ideal response?
Write as a decimal.26.3%
A. 0.153 B. 0.0263 C. 0.263 D. 2.63
Find the real solutions of the equation.(3x - 7)1/2 = 4
A. {
}
B. {
}
C. {
}
D. no real solution
Find the foci of the ellipse whose equation is given.
+ 
= 1
A. foci at (-3, -1 - 
) and (-3, -1 + 
)
B. foci at (3, -1 - 
) and (3, -1 + 
)
C. foci at (-2, -1 - 
) and (-2, -1 + 
)
D. foci at (-1, -3 - 
) and (-1, -3 + 
)