brandon2222269
18.07.2019 •
Mathematics
Two sales representatives leave from the same office. one travels 20 miles due north and the other travels 5 miles due west. how far apart are the sales representatives? estimate the distance to the nearest tenth.
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Ответ:
20^2 + 5^2 = c^2
400 + 25 = c^2
c^2 = 425
c = 20.6155
They are 20.6 miles apart
Ответ:
pH = f(x) = -log₁₀x
1. Graphs
I used Excel to calculate the pH values and draw the graphs (see the Figure).
f(x) and f(x) +1 are plotted against the left-hand axis, while f(x+ 1) is plotted against the expanded right-hand axis.
The points at which pH = 0 and pH = 1 are indicated by the large red dots.
2. x = 0.5
When x = 0.5, pH ≈0.30. The point is indicated by the red diamond.
3. Transformations
(a) ƒ(x) = -log(x) + 1
This function has no y-intercept, because log(0) is undefined.
(b) ƒ(x +1) = -log(x + 1)
f(0) = -log(0 + 1) = -log(1) = 0
This function has a y-intercept at (0,0).
hope this helps please mark me brainliest!