anuel504
01.01.2022 •
Mathematics
Giving away BRAILIEST. What are the coordinates closest to David’s house?
A. (5,3)
B. (1,5)
C. (-5,3)
D. (-3,5)
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Ответ:
Ответ:
c
hope that helps
good luck
Ответ:
Step-by-step explanation:
Let the speed of the boat be xSpeed against the current in the river is x - 2Time in the river:
6/(x - 2)Time in the lake:
15/xThe difference:
6/(x - 2) = 15/x - 1Solve for x to find the speed of the boat
Multiply both sides by x(x - 2) to clear the fraction:
6x = 15(x - 2) - x(x - 2)6x = 15x - 30 - x² + 2xx² - 11x + 30 = 0(x - 5)(x - 6) =0x -5 = 0, x - 6 = 0x = 5 km/h, x = 6 km/h