Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 12x + 26 = 0
A. {-6 ± 
}
B. {-12 ± 
}
C. {6 ± 
}
D. {6 ± 
}
Answer: A
Mathematics
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Solve.How long will it take for $2200 to grow to $20,000 at an interest rate of 6.6% if the interest is compounded quarterly? Round the number of years to the nearest hundredth.
A. 34.54 yr B. 138.87 yr C. 33.72 yr D. 134.87 yr
Mathematics
The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.At a recent Phish rock concert, sound intensity reached a level of 0.50 watt per square meter. To the nearest whole number, calculate the loudness of this sound in decibels.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the equation.125x3 + 3 = 75x2 + 5x
A. 
B. 
C. 
D. 
Mathematics
Use factoring to solve the quadratic equation.x(4x + 18) = 10
A. 
B. 
C. 
D. 
Mathematics