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alesyabursevich
27.09.2019 •
Mathematics
6.
find the slope of a line that contains the points: (-3,5) and (-1, 12).
slope =
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Ответ:
7/2
Step-by-step explanation:
Slope= y2-y1/x2-x1
(12-5)/(-1--3)
-> (7)/(2)
7/2
Ответ:
30 minutes later it went down to 6 - 2,
30 minutes later it went down to 6 - 2 - 2
let's check the change per intervals of 30 minutes
so after 1 interval of 30 minutes, it went down to 6 - 2
after 2 intervals of 30 minutes, it went down to 6 - 2 - 2, or just 6 -2(2)
after 3 interval of 30 minutes, it went down to 6 - 2 - 2 - 2, or just 6 -2(3)
after "x" intervals of 30 minutes, it went down to 6 - 2(x).
now, how many 30 minutes intervals are there in 4hours? well, 8.
so after 4 hours, x = 8, thus it went down 6 - 2(8) degrees Celsius.