Which expression can be simplified to find the slope of the trend line in the scatterplot?

On a graph, a trend line goes through points (2, 87) and (8, 78).
StartFraction 2 minus 8 Over 78 minus 87 EndFraction
StartFraction 78 minus 87 Over 8 minus 2 EndFraction
StartFraction 78 minus 8 Over 87 minus 2 EndFraction
StartFraction 8 minus 2 Over 78 minus 87 EndFraction

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

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

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)