3 years ago

Question 6

Mathematics

1 answer:

pishuonlain [190]3 years ago

5 0

<em> </em>I am positive that the answer is D. Let me know if i got it wrong so i can fix it

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Water comes out of a pipe at a rate of 15 gallons per minute. How many gallons have come out after 5 minutes?

lubasha [3.4K]

Answer:

75 gallons

Step-by-step explanation:

15gal PER 1 min

__gal PER 5 mins

To solve this, I would do 15 x 5. That gets me to 75 gallons.

Hope this helps :D

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What is the answer to 6-1x0+2/2 ?

Masja [62]

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What is the result of converting 8 gallons to quarts? Remember, there are 4 quarts in a gallon. A.16 quarts B.4 quarts C.2 quart

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3 years ago

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A probability distribution for a random variable Y is given by P(Y=y)=cy, for y=1,2,4,5 and c is a constant. Find E(Y), the expe

Dahasolnce [82]

Answer:

$c(1+2+4+5) =1$

$c =\frac{1}{12}$

Now we can find the expected value with this formula:

$E(Y) =\sum_{i=1}^n Y_i P(Y_i) =\sum_{i=1}^n cy_i *y_i = cy^2_i$

And replacing we got:

$E(Y) = \frac{1}{12} (1^2 + 2^2 + 4^2 +5^2) = \frac{46}{12}= \frac{23}{6}$

Step-by-step explanation:

For this case we know the following probability mass function given:

$P(y) = cy , y= 1,2,4,5$

For this case we need to satisfy the following condition in order to have a probability distribution function:

$\sum_{i=1}^n P(y_i) =1$

And we have this:

$c(1+2+4+5) =1$

$c =\frac{1}{12}$

Now we can find the expected value with this formula:

$E(Y) =\sum_{i=1}^n Y_i P(Y_i) =\sum_{i=1}^n cy_i *y_i = cy^2_i$

And replacing we got:

$E(Y) = \frac{1}{12} (1^2 + 2^2 + 4^2 +5^2) = \frac{46}{12}= \frac{23}{6}$

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3 years ago

Oliver’s room is 3 yards wide. The perimeter of the room is 14 yards.

-BARSIC- [3]

You do 3 times 14 and you get 42

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3 years ago

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