The sum of al's and martha's ages is 48. martha is 10 years older than al. how old is martha? type in your numerical answer only; do not type any words or letters with your answer

What ia the sum if the first 7 terms of the geometric series

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2

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.