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3 years ago

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A website offers a coupon such that each customer has a 15\%15%15, percent chance of getting the coupon each day they visit the

site. Aya visits the website for 666 consecutive days.
What is the probability that Aya will be offered a coupon on at least one of the days she visits the website?
Round your answer to the nearest hundredth.

1 answer:

VikaD [51]3 years ago

3 0

Answer:

0.62 im 99% sure

Step-by-step explanation:

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A solution initially contains 200 bacteria. 1. Assuming the number y increases at a rate proportional to the number present, wri

GuDViN [60]

Answer:

1. $\frac{dy}{dt}=ky$

2.543.6

Step-by-step explanation:

We are given that

y(0)=200

Let y be the number of bacteria at any time

$\frac{dy}{dt}$ =Number of bacteria per unit time

$\frac{dy}{dt}\proportional y$

$\frac{dy}{dt}=ky$

Where k=Proportionality constant

2. $\frac{dy}{y}=kdt$ ,y'(0)=100

Integrating on both sides then, we get

$lny=kt+C$

We have y(0)=200

Substitute the values then , we get

$ln 200=k(0)+C$

$C=ln 200$

Substitute the value of C then we get

$ln y=kt+ln 200$

$ln y-ln200=kt$

$ln\frac{y}{200}=kt$

$\frac{y}{200}=e^{kt}$

$y=200e^{kt}$

Differentiate w.r.t

$y'=200ke^{kt}$

Substitute the given condition then, we get

$100=200ke^{0}=200 \;because \;e^0=1$

$k=\frac{100}{200}=\frac{1}{2}$

$y=200e^{\frac{t}{2}}$

Substitute t=2

Then, we get $y=200e^{\frac{2}{2}}=200e$

$y=200(2.718)=543.6=543.6$

e=2.718

Hence, the number of bacteria after 2 hours=543.6

4 0

3 years ago

if the breadth of rectangle in one third of its length and perimeter is 80 cm find length and breadth of rectangle

LiRa [457]

Answer:

length = 30 cm

Breadth = 10 cm

Step-by-step explanation:

Length = x cm

Breadth = (1/3)x

Perimeter = 80 cm

2(length + breadth) = 80

2* (x + (1/3)x) = 80

$2*(\frac{3}{3}x+\frac{1}{3}x) = 80\\\\2*(\frac{4}{3}x) = 80\\\\\frac{8}{3}x = 80\\\\x = 80*\frac{3}{8}\\\\x = 10*3$

x = 30cm

length = 30 cm

breadth = $\frac{1}{3}*30=10$ cm

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csum%20_%7Bn%3D0%7D%5E%7B%5Cinfty%20%5C%3A%7D%5Cfrac%7B%5Cleft%28-1%5Cright%29%5En%5Carctan%

LUCKY_DIMON [66]

-1/00 should be the answer

8 0

3 years ago

A snail travels 10 cm in 4 minutes. At this rate: How long will it take the snail to travel 24 cm? minutes How far does the snai

vovangra [49]

Answer:

1) 9 min 36 sec (9.6min)

2) 15 cm

Step-by-step explanation:

10 cm -->4 min

1 cm --> 0.4 min

24cm --> 9.6 min

15 cm--> 6min

3 0

3 years ago

Read 2 more answers

Solve pls brainliest

VikaD [51]

Answer: -5.27 + (-3.32) = -8.59 and -5.6 + 27.4 = 21.8

Step-by-step explanation: Have a nice day bro!✌️

6 0

2 years ago