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larisa86 [58]
2 years ago
15

t takes Dariya 35 seconds to download 5 songs from the Internet. How can the number of seconds it would take Dariya to download

7 songs at this rate be determined?
Mathematics
3 answers:
Vitek1552 [10]2 years ago
8 0
She would be able to download 49 at this rate.
Because 5/35 =7/n which would then =245/5 which equals 49
Ahat [919]2 years ago
6 0

Answer:

The time it takes to download 7 songs is 49 seconds.

Step-by-step explanation:

It is about a division problem.

The first step is to determine how long it takes to download just one song. You must divide the total seconds by the total songs downloaded. The result would be the time required to download just one song.

\frac{35\, seconds}{5\, songs}=7\frac{seconds}{song}

The previous value indicates that the download time is 7 seconds per song.

The second step is to determine how long it takes to download 7 songs. With the previous value in mind, you must multiply the time it takes to download one song by the 7 songs that Dariya wants to download, to obtain the total time it takes to download the 7 songs.

\frac{7\, seconds}{1\, song}\times 7\, songs=49\, seconds

Thus, the time it takes to download 7 songs is 49 seconds.

Guest11 months ago
0 0

42 seconds

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A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c
Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q  }{E^2}

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of  (1 - confidence level)/2.  Use the calculator function of invNorm to find the z-score.  The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p.  For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333

Round up to the next number, giving you 405.

6 0
1 year ago
Copy and complete each table.
LUCKY_DIMON [66]

Answer:

5th term of sequence = -18

nth term of the sequence = -5n + 7

Step-by-step explanation:

Difference between successive and previous term of the output,

T_{2}-T_{1} = -3 - 2

           = -5

Similarly, T_{3}-T_{2}=-8-(-3)

                            = -5

There is a common difference 'd' = (-5)

Therefore, the sequence formed will be an arithmetic sequence.

First term of the sequence 'a' = 2

Explicit formula of an arithmetic sequence, T_{n} = a + (n - 1)d  [n = input value]

T_{n} = 2 + (n - 1)(-5)

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5th term of this sequence,

T_{5}=2+(5-1)(-5)

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Therefore, 5th term of sequence = -18

                  nth term of the sequence = -5n + 7

3 0
1 year ago
Ramon has 6.75 kg coffee. he wants 0.25 kg bags. how many bags does he need?
Hatshy [7]

Answer:

Ramon would need 27 bags

Step-by-step explanation:

This is because if you divide 6.75 by 0.25 you would get 27

5 0
1 year ago
8,000 is blank as 800
Alecsey [184]

8,000 is 10 times as much as 800

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pshichka [43]

Answer:

An adult Welsh Corgi is always going to be shorter than an adult Basset Hound.

Step-by-step explanation:

That's what I think because the Basset Hound is 13.8 in. in height right? So he's two inches taller if we round up both numbers. Basset hound would be 14 and welsh corgi would be 11....................okay im not sure i give up but it's either

"An adult Welsh Corgi is always going to be shorter than an adult Basset Hound."

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whichever just not the other ones good luck!

8 0
1 year ago
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