AutumnJoy12
05.11.2019 •
Mathematics
How many fence posts are used in 1 kilometer of fence
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Ответ:
160 fence posts
Step-by-step explanation:
Well, since there are 1920 fence post in 12 kilometers, it can be safe to say that if you divide the number of fence posts by 12, since there are 12 kilometers, you can get the amount of one kilometer. Dividing 1,920 by 12 gives you 160, so therefore there are 160 fence posts per kilometer, or in one.
Ответ:
y = - 4
Step-by-step explanation:
Given
y = 2x + ( - 2) , that is
y = 2x - 2 ← substitute x = - 1
y = 2(- 1) - 2 = - 2 - 2 = - 4
This is confirmed by the point (- 1, - 4 ) on the graph