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dlinn [17]
4 years ago
14

Let f(x)=15/(1+4e^(-0.2x)

Mathematics
1 answer:
Anit [1.1K]4 years ago
6 0
The interval of growth rate can be seen in the graph below


The answer is (-∞, ln(4)/0.2) =  (-∞, 6.9314)


(As x goes to infinity f(x) goes to 15)


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Please need help on this question thanks. see the screenshot
slava [35]

Check the picture below.

F = sales for Friday

we know that the total of weekend sales for Germany was F + 317 + 405.

we also know that 405 is really 37.19% of that amount, say "x", which is the 100%, so

\begin{array}{ccll} amount&\%\\ \cline{1-2} 405&37.19\\ x&100 \end{array}\implies \cfrac{405}{x}=\cfrac{37.19}{100}\implies 40500=37.19x \\\\\\ \cfrac{40500}{37.19}=x\implies 1089~\approx ~ x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{friday}{F} + \stackrel{sat/sun}{317} + \stackrel{monday}{405} \approx 1089\implies F +722 \approx 1089\implies \boxed{F\approx 367}

6 0
3 years ago
One number is five more than another. If their sum is increased by nine, the result is 60. Find the numbers.
svlad2 [7]

Answer:

The two numbers are 23 and 28

Step-by-step explanation:

We are given that

X = Y + 5\\and\\(X+Y) + 9 = 60\\X+Y = 51\\(Y+5) + Y = 51\\2Y + 5 = 51\\2Y = 46\\Y = 23\\\\X = Y + 5\\X = 23 + 5\\X = 28

4 0
3 years ago
There are 75 students enrolled in a camp. The day before the camp begins, 8% of the students cancel. How many students actually
8090 [49]

Answer:

69 students attend the camp

Step-by-step explanation:

8% of 75 = 6

75 - 6 = 69

6 0
3 years ago
Read 2 more answers
If a rectangle is rotated about the y-axis as shown below, what three-dimensional figure would be formed?
Xelga [282]

Answer:

Cylinder.  The explanation is not very exact, more intuition and whatnot, so let me know if there was anything you did not understand.  

Step-by-step explanation:

This is assuming the rectangle has its sides parallel with the x and y axes.  

Let's try to eliminate them one by one.  A cone does not seem likely since it has slanted sides, and spinning the two straight sides will keep the sides straight.  This can be used for the pyramid as well.  Let me know if this doesn't make sense though.

Now for me I would imagine that rectangle being a sheet of paper, or metal.  if you set that sheet atop some dirt or something and then rotated it, what shape would be drawn into the material?  It would be a circle.  So we know the 3d shapewill have a base of a circle, which leaves us with a cylinder.  Again, let me know if this method did not make sense.  

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3 years ago
Aiden refills three token machines in an arcade. He puts twice the number in machine A as in machine B, and in machine C , he pu
Sonja [21]
It is a possibility of being 16 or 5/6
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