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2 years ago

Need help with this question! :)

Mathematics

1 answer:

dimaraw [331]2 years ago

3 0

Answer:

13 i think

Step-by-step explanation:

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PLEASE HELP!! 25 POINTS AWARDED

kondaur [170]

Answer:

The following numbers ARE functions:

2, 3, 6, 7, 9, 12

Step-by-step explanation:

A function is only possible if the x values have NO REPEATING NUMBER!!!

Every number that isn't mentioned above has at least 1 number in it's x-values that repeats.

Question 1 has the 8 and 4 with 2 numbers.

Question 4 the 3 repeating. (There are 2 dots over the 3)

Question 5 has numbers 1 and 5 repeating many times

Question 8 numbers 1 and 2 are repeated twice

Question 10 number 3 repeats twice

Question 11 has the 1 repeated

8 0

3 years ago

certain computer virus can damage any file with probability 35%, independently of other files. Suppose this virus enters a folde

Ksivusya [100]

Answer:

0.623 is the probability that between 800 and 850 files get damaged.

Step-by-step explanation:

We are given the following information:

We treat virus can damage computer as a success.

P( virus can damage computer) = 35% = 0.35

The conditions for normal distribution are satisfied.

By normal approximation:

$\mu = np = 2400(0.35) = 840\\\sigma = \sqrt{np(1-p)} = \sqrt{2400(0.35)(1-0.35)} = $$23.36$

We have to evaluate probability that between 800 and 850 files get damaged.

$P(800 \leq x \leq 850) = P(\displaystyle\frac{800 - 840}{23.36} \leq z \leq \displaystyle\frac{850-840}{23.36}) = P(-1.712 \leq z \leq 0)\\\\= P(z \leq 0.428) - P(z < -1.712)\\= 0.666 - 0.043 = 0.623 = 62.3\%$

$P(800 \leq x \leq 850) = 62.3\%$

0.623 is the probability that between 800 and 850 files get damaged.

8 0

3 years ago

A study is done by a community group in two neighboring colleges to determine which one graduate's students with more math class

ozzi

Answer:

thats a long question my friend

Step-by-step explanation:

7 0

3 years ago

Elena has 6,492 stickers in her collection. She wants to put them into a book. She can fit 12 stickers on each page. How many pa

Talja [164]

Answer:

541

Step-by-step explanation:

6492 / 12 = 541 pages

3 0

2 years ago

As James bought his textbooks for classes one semester, he estimated the cost to the nearest ten dollars. He knew he could cover

TEA [102]

Answer:

$310

Step-by-step explanation:

The first step is to add the costs of the textbook together :

$68.41 + $105.35 + $72.49 + $59.91 = $306.16

In order to round off to the nearest ten dollars, look at the units figure, if the number is greater or equal to 5, add 1 to the ten figure. If this is not the case, add zero. Replace the unit digit with zero

The unit digit is greater than 6, so 1 is added to the tens digit. The amount becomes $310

8 0

2 years ago