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Serggg [28]
3 years ago
5

I need help on these questions can u make sure u do all of them cuz some people just only do one problem.

Mathematics
2 answers:
Zepler [3.9K]3 years ago
8 0

Answer:

(I can't figure out number one)

2. 7 1/2 feet below sea level or -7 1/2 feet

3. It would stop on the 17th floorl

Step-by-step explanation:

2. You subtract 20 1/2 by 28 to get your answer. Flipped around, 28 - 20 1/2 is 7 1/2 so back to the right way would be -7 1/2 or 7 1/2 feet below sea level.

3. 23 + 5 = 28

28 - 14 = 14

14 + 3 = 17

So the 17th floor would be the answer.

jolli1 [7]3 years ago
8 0

Answer:

im soo srry i want to be smart i hope you could understand that im dumb and cant even awnser thase questions

Step-by-step explanation:

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If you roll two number cubes 100 times, about how many times can you expect the product to be a multiple of 6? (Example 6, 12, 1
KonstantinChe [14]

Using the binomial distribution, it is found that you could expect the product to be a multiple of 6 about 39 times.

For each trial, there are only two possible outcomes, either the result is a multiple of 6, or it is not. The result of each trial is independent of any other trial, hence the <em>binomial distribution</em> is used to solve this question.

<h3>What is the binomial probability distribution?</h3>

It is the probability of exactly <u>x successes on n repeated trials, with p probability </u>of a success on each trial.

The expected value of the binomial distribution is:

E(X) = np

In this problem:

  • When two cubes are tossed and their products multiplied, there are 36 possible outcomes. Of those, (1,6), (2,3), (2,6), (3,4), (3,6), (4,3), (4,6), (5,6), (6,1), (6,2), (6,3), (6,4), (6,5), (6,6), that is, 14 result in a multiplication multiple of 6, hence p = 14/36.
  • There will be 100 trials, hence n = 100.

Then, the <em>expected value</em> is given by:

E(X) = np = 100 \times \frac{14}{36} = 38.89

Rounding up, you could expect the product to be a multiple of 6 about 39 times.

More can be learned about the binomial distribution at brainly.com/question/24863377

7 0
2 years ago
What is the value of y in the solution to this system of equations?<br> 5x – 7y = 7<br> y = -5x + 3
zysi [14]

Answer:

y = -0.5

Step-by-step explanation:

given

5x – 7y = 7    ------- eq 1

y = -5x + 3  (we rearrange this so that the terms are in the same order as eq 1)

-5x – y = -3   ----- eq 2

by elimination, eq 1 + eq 2

(5x – 7y) + (-5x – y) = 7 + (-3)

5x - 7y -5x - y = 7-3

-8y = 4

y = 4/(-8)

y = -0.5

7 0
3 years ago
Manuel reads 5/8 chapters in 4/5 hours.
Evgen [1.6K]

Answer:

25/32 chapter per hour

Step-by-step explanation:

(5/8)/(4/5)=x/1

cross product

4/5*x=(5/8)(1)

4/5x=5/8

x=(5/8)/(4/5)

x=(5/8)(5/4)

x=25/32

5 0
3 years ago
Javed downloaded from the Internet two files that had a combined size of 696 megabytes. The size of the first file was 290 megab
vitfil [10]

Answer:

7 minutes I'm pretty sure I'm sorry if I'm not but if I'm right can I have brainliest answer?

8 0
3 years ago
Read 2 more answers
Which part of figure A is misleading ?
Marta_Voda [28]

Answer:

2

Step-by-step explanation:

It looks like figure A shows lower scores since it doesn't start at 0

7 0
3 years ago
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