With her motorboat at full speed Dawn gets to her fishing hole, which is 21 miles
upstream, in 2 hours. The return trip takes
1 hours.
How fast could her motorboat go in
still water?
What is the rate of the current?

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)