Evaluate the sum.
4k
A. -16
B. 112
C. 16
D. -112
Answer: C
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Estimate the value of the quantity.A swimming pool has a leak. The leak is getting worse. The following table gives the leak rate every 6 hours.
Suppose it keeps leaking 6.9 gallons every 6 hours. After losing 2500 gallons the leak is fixed. Approximately how long did the leak last? Use the right endpoints to estimate the first 48 hours.
A. 33.54 hours B. -93.20 hours C. 53.64 hours D. 27.54 hours
Provide an appropriate response.
(i) List the sequence of hexagonal numbers. that corresponds to the sequence of dot patterns above. These are called (ii) What is the ninth hexagonal number?(III) Determine a formula for the nth pentagonal number pn.
A. (i) 1, 7, 22, 50, .... (ii) Ninth hexagonal number: 170 (iii) hn = (n + 1)(2n - 1) B. (i) 1, 6, 15, 28, .... (ii) Ninth hexagonal number: 41 (iii) hn = 5n - 4 C. (i) 1, 6, 15, 28, .... (ii) Ninth hexagonal number: 153 (iii) hn = n(2n - 1) D. (i) 1, 7, 22, 50, .... (ii) Ninth hexagonal number: 144 (iii) hn = 2n(n - 1)
Find the midpoint of the line segment joining the points P1 and P2.P1 = (5, 5); P2 = (9, 7)
A. (6, 7) B. (14, 12) C. (-4, -2) D. (7, 6)
Provide an appropriate response.The total number of reported cases of AIDS in the United States has risen from 372 in 2001 to 100,000 in 2009 and 200,000 in 2012. Does a linear equation fit this data? Explain.
What will be an ideal response?