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01.12.2020 •
Mathematics
What is the value of t?
3.5 (t + 6) = 7
o t= -4
Ot= -0.25
O t = 0.25
O t = 4
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Ответ:
t=-4
Step-by-step explanation:
t+6=7/3.5
t+6=70/35 (I expanded 7/3.5 by multiplying both numerator and the denominator by 10)
t+6=2 (I divided 70 by 35 to get 2)
t=2-6
t=-4
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!