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Naily [24]
3 years ago
9

The number y of hits a new website receives each month can be modeled by y = 4020ekt, where t represents the number of months th

e website has been operating. in the website's third month, there were 9,000 hits. find the value of k. (round your answer to four decimal places.)
Mathematics
1 answer:
Tcecarenko [31]3 years ago
5 0
The answer would be 1.34
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Choose 3 values for x that would make this inequality true. X - 4<20
Bond [772]

Answer:

x<24

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Step-by-step explanation:

X - 4<20

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x<24

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8 0
2 years ago
Please help, last week of school and I don’t understand this at all
rodikova [14]

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3 years ago
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Find the area of the surface. The part of the surface z = xy that lies within the cylinder x2 + y2 = 36.
rewona [7]

Answer:

Step-by-step explanation:

From the given information:

The domain D of integration in polar coordinates can be represented by:

D = {(r,θ)| 0 ≤ r ≤ 6, 0 ≤ θ ≤ 2π) &;

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y =\dfrac{\partial z}{\partial x} , x = \dfrac{\partial z}{\partial y}

Thus, the area of the surface is as follows:

\iint_D \sqrt{(\dfrac{\partial z}{\partial x})^2+ (\dfrac{\partial z}{\partial y})^2 +1 }\ dA = \iint_D \sqrt{(y)^2+(x)^2+1 } \ dA

= \iint_D \sqrt{x^2 +y^2 +1 } \ dA

= \int^{2 \pi}_{0} \int^{6}_{0} \ r  \sqrt{r^2 +1 } \ dr \ d \theta

=2 \pi \int^{6}_{0} \ r  \sqrt{r^2 +1 } \ dr

= 2 \pi \begin {bmatrix} \dfrac{1}{3}(r^2 +1) ^{^\dfrac{3}{2}} \end {bmatrix}^6_0

= 2 \pi \times \dfrac{1}{3}  \Bigg [ (37)^{3/2} - 1 \Bigg]

= \dfrac{2 \pi}{3} \Bigg [37 \sqrt{37} -1 \Bigg ]

3 0
2 years ago
Please help<br> do step by step<br> I learn diff
Lesechka [4]
1.5 use a calculator
6 0
3 years ago
Read 2 more answers
If y = 45 when x = 180, what is the y when x= 90
bearhunter [10]

Answer:

24.5

Step-by-step explanation:

Since 180 is double 90 divide 45 by 2 and you'll get 24.5

6 0
3 years ago
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