What is the value of x? options are 12 units and 15 units and 20 units and 24 units

The sum of two numbers is 86, and their difference is 20. find the two numbers

27 is what percent of 108? 27 is % of 108

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125