The Rivera family and the Cook family each used their sprinklers last summer. The water output rate for the Rivera family's sprinkler was 40 per hour. The water output rate for the Cook family's sprinkler was20 per hour. The families used their sprinklers for a combined total of 65 hours, resulting in a total water output of 2000. How long was each sprinkler used?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u. s. dollars for every 100 euros. b) gabriella averages 100 u. s. dollars for every 25 euros. c) gabriella can exchange 75 u. s. dollars for 100 euros. d) gabriella can exchange 100 u. s. dollars for 75 euros.

Pentagon abcde is dilated according to the rule do,3(x, y) to create the image pentagon a'b'c'd'e', which is shown on the graph. what are the coordinates of point a of the pre-image? a) (-1, 1)b) (-1, 2)c) (-9, 6)d) (-9, 18)