Paolo is building a brick wall. So far, the wall has five layers of the bricks. Each brick is 7.5cm high. The layers of mortar between the bricks are 15mm tick. a) Work out the total heigh of the wall, in centimetres.
b) How many more layers of bricks does Paolo need, for the wall to reach a total height of 0.7 m? (I uploaded a picture of the bricks)

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.

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