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Cloud [144]
3 years ago
12

Hey Which expression uses the commutative property of addition and the associative property of multiplication to rewrite the exp

ression 5+3*(3*8)
A. (3*3)*8+8
B. 3*(3*8)+5
C. 5+3*(24)
D. 3*(8*3)+5
Mathematics
1 answer:
Bess [88]3 years ago
5 0
The answer would be B
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Write an equation and then solve each word problem: My computer can download a movie in 5 hours. If I install an extra processor
Murrr4er [49]

Answer:

The new extra processor would take 20 hours to download the movie.

Step-by-step explanation:

This word problem presents two variables: n - Processing capacity, dimensionless; t - Download time, measured in hours. Both variables exhibit a relationship of inverse proportionality, that is:

t \propto \frac{1}{n}

t = \frac{k}{n}

Where k is the proportionality constant.

Now, let suppose that original processor has a capacity of 1 (n = 1), the proportionality constant is: (t = 5\,h)

k = n\cdot t

k = (1)\cdot (5\,h)

k = 5\,h

The equation is t = \frac{5}{n} and if time is reduced to 4 hours by adding an extra processor, the processing capacity associated with this operation is: (t = 4\,h)

n = \frac{5}{t}

n = \frac{5\,h}{4\,h}

n = 1.25

Then, the extra processor has a capacity of 0.25. The time required for the new extra processor to download the movie is: (n = 0.25)

t = \frac{5\,h}{0.25}

t = 20\,h

The new extra processor would take 20 hours to download the movie.

6 0
3 years ago
The temperature at 7:00 a.m. was -5°F. By 4:00 p.m., the temperature had risen 9
Elza [17]

Answer:

The answer is -7 degrees. :)

Step-by-step explanation:

-5+9-11=7

4 0
4 years ago
Need Help Please <br><br> what is y <br><br> 2x-4y=58?
Bond [772]

Answer:

y = 1/2 x -14.5

Step-by-step explanation:

2x-4y=58

solve for y

subtract 2x from each side

2x-2x-4y = -2x+58

-4y = -2x+58

divide by -4 on both sides

-4y/-4 = -2x/-4 +58/-4

y = 1/2 x -14.5


3 0
4 years ago
What is the measure of &lt;ABD​
Mariana [72]
There is no problem attached ...
3 0
3 years ago
Read 2 more answers
A bank manager estimates that an average of two customers enter the tellers' queue every five minutes. Assume that the number of
Dovator [93]

Answer:

The value is  P(X = 3) = 0.1804  

Step-by-step explanation:

From the question we are told that

   The number of customer that enter the tellers every 5 minutes is  \lambda   = 2

Generally the  probability that exactly three customers enter the queue in a randomly selected five-minute period is mathematically represented as

      P(X = 3) = \frac{e^{- \lambda} * \lambda^{3}}{3!}

=>   P(X = 3) = \frac{e^{- 2} * \lambda^{3}}{3!}

=>   P(X = 3) = 0.1804    

4 0
3 years ago
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