Radium - 226 has a half-life of 1600 years. Suppose we have a 300 g sample. How much of the sample remains after 200 years?
(a) 105.61 g
(b) 124.61 g
(d) 288.1 g
(e) 200.1 g
(c) 275.1 g
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Solve the problem.A rectangular piece of fabric is 
by 
A triangular area with a height of 
and a base of 
is cut from the fabric. How much area is left over?
A. 208.32 ft2 B. 377.28 ft2 C. 277.2 ft2 D. 188.64 ft2
Suppose that John hands you a coin to flip and wants to bet on the outcome. Now, John has tried this sort of thing before, and you suspect that the coin is "rigged." You decide to test this hypothesis by taking a sample. You flip the coin twice, and it is heads both times. You say, "Aha, I knew it was rigged!" John replies, "Don't be silly. Any coin can come up heads twice in a row."
? The following scheme was devised to allow fair results even if the coin is somewhat biased. The coin is flipped twice. If it comes up heads both times or tails both times, it is flipped twice again. If it comes up heads-tails, this will decide the outcome in favor of the first party; and if it comes up tails-heads, this will decide the outcome in favor of the second party. Will this result in a fair toss even if the coins are biased? ? A. No B. Yes
How many sides does a polygon have if the sum of its angles is 
.
?
A. 17 sides B. 16 sides C. 10 sides D. 13 sides E. 12 sides
Answer the question.Explain how to add rational expressions with different denominators.
What will be an ideal response?