The expression may be factored as shown. Find the missing factor.
+ 
= 
(
)
A. 
B. 
C. 
D. 
E. none of these
Answer: E
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Two statements are listed in which p, q, and r represent propositions. Are the two statements logically equivalent?p or q; not [(not p) and (not q)]
A. Yes B. No
Solve the problem.From a thin piece of cardboard 40 in. by 40 in., square corners are cut out so that the sides can be folded up to make a box. What dimensions will yield a box of maximum volume? What is the maximum volume? Round to the nearest tenth, if necessary.
A. 13.3 in. by 13.3 in. by 13.3 in.; 2370.4 in.3 B. 20 in. by 20 in. by 10 in.; 4000 in.3 C. 26.7 in. by 26.7 in. by 6.7 in.; 4740.7 in.3 D. 26.7 in. by 26.7 in. by 13.3 in.; 9481.5 in.3
The radioactive element polonium decays according to the law 
, where Q?0 is the initial amount and the time t is measured in days. If the amount of polonium left after 280 days is 80 mg, what was the initial amount present?
?
__________ mg
Fill in the blank(s) with the appropriate word(s).
Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 + 8x
A. 0; 
2
B. 16; 
2
C. 64; 
2
D. 16; 
2