Simplify the expression.- 
x + 
+ 
x - 2
A. 
x - 
B. 
x - 
C. 
x + 
D. - 
x - 
Answer: A
Mathematics
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Simplify the algebraic expression.2.7(3y - 0.3)
A. 8.1y - 0.81 B. 8.1y - 8.1 C. 8.1y + 0.81 D. 8.1y - 0.3
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Negate the statement.Dave's shirt is either red or orange.
What will be an ideal response?
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Simplify.
A. 8x(x + 8) B. x + 8 C. -(x + 8) D. -(x - 8)
Mathematics
Solve the problem.A carbon-14 dating test is performed on a fossil bone, and analysis finds that 15.5% of the original amount of carbon-14 is still present in the bone. Estimate the age of the fossil bone. (Recall that carbon-14 decays according to the equation A = A0e-0.000124t).
A. 15,000 years B. 150 years C. 15,035 years D. 1,500 years
Mathematics