The water level of an ocean bay falls 3.5 feet per hour from high tide to low tide. low tide is reached in 7 hours. which expression represents how much the water level decreases between high tide and low tide? a. 21.5 ft. b. 24.5 ft. c. -21.5 ft. d. -27.5 ft.

What number should be added to both sides of the equation to complete this square? x^2-10x=7

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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