Determine the intervals on which the function f(x)=−7x2−7x+6f(x)=−7x2−7x+6 is concave up or down and find the points of inflection. (Use symbolic notation and fractions where needed. Give your answer as comma separated list. Enter NULL if there are no points of inflection.) Points of inflection: help (fractions) (Use symbolic notation and fractions where needed. Give your answers as intervals in the form (*,*). Use inf for infinity , U for combining intervals, and appropriate type of parenthesis "(", ")", "[" or "]" depending on whether the interval is open or closed. Enter NULL if interval is empty.) f(x)f(x) is concave up when x∈x∈ help (intervals) f(x)f(x) is concave down when x∈

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

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.

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.