Estimate the sum or difference by first rounding each number to the nearest hundred.820.01 + 167.978
A. 1000
B. 700
C. 600
D. 653
Answer: A
Mathematics
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Find the indicated probability. Round your answer to 6 decimal places when necessary.If a person is randomly selected, find the probability that his or her birthday is not in May. Ignore leap years.
A. 
B. 
C. 
D. 
Mathematics
Determine if the series converges or diverges. If the series converges, find its sum.
A. converges; 
B. converges; 
C. diverges
D. converges; 
Mathematics
Find the sum of the terms of the arithmetic sequence.-154, -139, -124, -109, . . ., 11 n = 12
A. 990 B. -1716 C. 858 D. - 858
Mathematics
Provide an appropriate response.Perform the multiplication: -6a(-2a2)
A. -8a3 B. -12a3 C. 12a3 D. -8a2
Mathematics