Evaluate the expression for the given replacement values. Write the answer in simplest form.
for x = 
, y = 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve.A certain radioactive isotope has a half-life of approximately 1450 years. How many years to the nearest year would be required for a given amount of this isotope to decay to 40% of that amount?
A. 1877 years B. 1069 years C. 870 years D. 1917 years
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
A closed rectangular box having a volume of 
is to be constructed. If the material for the sides costs 
and
the material for the top and bottom costs 
, find the dimensions of the box that can be constructed with minimum cost.
What will be an ideal response?
Mathematics
Use the theorem on bounds to establish the best integral bounds for the roots of the equation.8x3 + 9x + 3 = 0
A. -1 < x < 2 B. -1 < x < 1 C. -2 < x < 2 D. -2 < x < 1
Mathematics