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levacccp [35]
3 years ago
7

your grade varies directly with the time you study if you study for 40 minutes your grade is an 80 how long should you study to

get a 95
Mathematics
1 answer:
Anna71 [15]3 years ago
7 0

Answer:

47.5 minutes

Step-by-step explanation:

40 min = 80

x min = 95

40/80 = x/95

3800 = 80x

x = 47.5

-Chetan K

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A shopkeeper sells an article of 400, while he purchases it for 402. Find out loss percent of shop keeper​
Natalija [7]

Answer:

0.5%

Step-by-step explanation:

A shop keeper sells an article for 400

He purchases it for 402.

Therefore, loss = cost price - selling price

402 - 400 = 2

% loss =

loss/cost price x 100%

2/402 x 100%

= 200/402

=0.498

=0.5%

5 0
3 years ago
Suppose the number of hits a webpage receives follows a Poisson distribution. The average number of hits per minute is 2.4. What
REY [17]

Answer:

The probability that the page will get at least one hit during any given minute is 0.9093.

Step-by-step explanation:

Let <em>X</em> = number of hits a web page receives per minute.

The random variable <em>X</em> follows a Poisson distribution with parameter,

<em>λ</em> = 2.4.

The probability function of a Poisson distribution is:

P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!};\ x=0,1,2,...

Compute the probability that the page will get at least one hit during any given minute as follows:

P (X ≥ 1) = 1 - P (X < 1)

             = 1 - P (X = 0)

             =1-\frac{e^{-2.4}(2.4)^{0}}{0!}\\=1-\frac{0.09072\times1}{1} \\=1-0.09072\\=0.90928\\\approx0.9093

Thus, the probability that the page will get at least one hit during any given minute is 0.9093.

6 0
2 years ago
Please help and show clear instructions will give brainliest !
Tems11 [23]

Answer:

Answer is 3 because

Step-by-step explanation:

a=2

20*2= 40

40-1 = 39

b = 13

so 39/13 = 3

3 0
3 years ago
Read 2 more answers
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Flauer [41]

Answer:

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Step-by-step explanation:

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The primary purpose of Passage 1 is to
marta [7]

Correct answer is E. The primary purpose of Passage 1 is to Highlight a concern.

The passage talks about spam and junk mail in our mail inbox and one has to go through it all to find out  real and important mails. This spam mails and the manner they flood our mails in is concerning. This is what the passage highlights. Thus E is the best answer.

While junk mail often comes from opt-in services, such as from businesses, spam refers to messages that the user did not opt to receive. When you're crafting a mailing list or sending out an advertisement, it's important that your message not come off as spam.

To learn more about spam and junk mail from given link

brainly.com/question/1285899

#SPJ4

6 0
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