Suppose that PQ and QR are known. Can the Segment Addition Postulate be used to find PR? Explain.

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

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250