Use sigma notation to represent the sum of the first seven terms of the following sequence: −4, −6, −8, … the summation from n equals one to 7 of quantity negative 2 minus 2 times n

the summation from n equals one to 7 of quantity negative 4 plus 2 times n

the summation from n equals one to 7 of quantity negative 2 minus 4 times n

the summation from n equals one to 7 of quantity negative 2 plus 2 times n

Urgent? will give brainliest to the first correct answer what is the area of the figure?

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

Each weekday davina rides her bike from her house to school. after school, she rides to the library. then davina takes the same route to get home. these locations are shown on the grid below, where 1 unit on the grid represents 1 kilometer. how many kilometers does she ride each day? 10 16 20 32