Solve the equation.10x2 + 21x + 9 = 0
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Convert the units.864 in.2 = 
ft2
A. 6 B. 7 C. 5 D. 96
Mathematics
Solve the problem.An artifact is discovered at a certain site. If it has 67% of the carbon-14 it originally contained, what is the approximate age of the artifact to the nearest year? (carbon-14 decays at the rate of 0.0125% annually.)
A. 3204 years B. 1391 years C. 5360 years D. 2640 years
Mathematics
Perform the following operation.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(4, 3); m = - 
A. y = - 
x + 
B. y = - 
x + 
C. y = - 
x + 
D. y = - 
x - 
Mathematics