The phases of the moon are periodic and repetitive. A new moon occurs when no moon is visible to an observer on Earth. During the first quarter, half of the side of the moon facing the Earth is visible. During a full moon the entire
side of the moon is visible. During the last quarter the other half of the side of the moon facing Earth is visible.
The U. S. Naval Observatory lists the following dates for phases of the Moon in the year 2008.
Date Moon Phase x: Days since y: The Amount of
Jan. 8
Moon Visible
Jan 8 New
JO
10
Jan 15 1st quarter
7
0.5
Jan 22 Full
13
1
Jan 30 Last quarter 22
10.5
Feb 7 New
30
0
Feb 14 1st quarter 37
10.5
Feb 21 Full
44
1
Feb 29 Last quarter 52
10.5
Mar 7 New
59
o
Mar 14 (1st quarter
66
0.5

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.