One side of a roof is in the shape of a trapezoid (similar to the one on pizza hut). the top row requires 10 shingles, the second row requires 16 shingles, the third row requires 22, etc. the nth row on the bottom requires 6n + 4 shingles. what is the total number of shingles needed to cover this side of the roof ? a) n2 + 6n b) 3n2 + 7n c) 6n2 + 10 d) 6n2 + 14n

Which graph represents an even function?

Given: p: 2x = 16 q: 3x – 4= 20 which is the converse of p - q? if 2x + 16, then 3x - 4 20. if 3x –4 +20, then 2x # 16. lf 2x = 16, then 3x - 4 = 20. lf 3x – 4= 20, then 2x = 16. o o

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