The construction workers are filling a hole with cement. the hole is 13.75 feet deep below ground level. they fill the hole with 27.50 feet of cement. what is the height of cement above ground level?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.