Annabelle has $0.15 worth of pennies and nickels. She has a total of 7 pennies and nickels altogether. By following the steps below, determine the number of pennies, x,
and the number of nickels, y, that Annabelle has.

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

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

Algebraically prove that a clockwise and counterclockwise rotation of 180° about the origin for triangle abc are equivalent rotations.