Help pls with this problem​

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

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b