Tell whether the sequence is arithmetic. If it is, identify the common difference. 1 '10' 19' 18

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

This is different from the first one can someone me

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