Evaluate the double integral over the given region.
R: 3 ? x ? 7, 3 ? y ? 7
A. 800
B. 400
C. 
D. 
Answer: B
Mathematics
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Find the probability.Find the probability of correctly answering the first 3 questions on a multiple choice test if random guesses are made and each question has 5 possible answers.
A. 
B. 
C. 
D. 
Mathematics
Solve.-7(x - 6) - 1x < -3(2x - 5) - 3x Put your answer in interval notation.
A. (-?, 27) B. (-?, -27) C. (27, ?) D. (-27, ?)
Mathematics
Write the word statement in symbols.Thirteen is greater than three plus nine.
A. 13 + 3 > 9 B. 3 + 9 > 13 C. 13 < 3 + 9 D. 13 > 3 + 9
Mathematics
Solve the problem.The decay of 978 mg of an isotope is given by 
where t is time in years. Find the amount left after 
A. 144 B. 946 C. 140 D. 72
Mathematics