6+4=4+6 a=comuntative b=associative c=identity d=distributive

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Figure abcde is a regular pentagon. segment ae is located at a (2, 1) and e (4, 1). what is the perimeter of abcde? 4 units 6 units 8 units 10 units

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market