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Iteru [2.4K]
3 years ago
6

Suppose a random sample of n=330 tenneagers 13 to 17 years of age was asked if they use social media. Of those surveyed, 252 sta

ted that they do use social media. Find the sample proportion of tenneagers 13 to 17 years of age who use social media​
Mathematics
1 answer:
Nitella [24]3 years ago
7 0

Answer:

what is

Step-by-step explanation:

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Olivia signed up for a streaming music service where there's a fixed cost for monthly membership and a cost per song downloaded.
Nuetrik [128]

Answer:

(A)If x represents the number of songs she downloads then it is a variable because of the AMOUNT of songs she downloads.

Step-by-step explanation:

For example if we had f(x)=2 the equation would be c=4.99+.75(2)

.75*2=1.50+4.99=

(6.49 = c) cost per month if she downloads 2 songs

8 0
3 years ago
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Need help remembering how to solve f(x)=5x2
nata0808 [166]
F(x)=5*2
the f(x) stands for a normal X like any other algebraic equation. so all it is, is 5 times 2, which is 10.
so,
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3 0
3 years ago
In how many ways can 7 persons be arranged in a line such that (a) two particular persons are never together.
ivanzaharov [21]

Answer:

3600 ways

Step-by-step explanation:

person A has 7 places to choose from :

→ He has 2 places ,one to the extreme left of the line ,the other to the extreme right of the line

If he chose one of those two ,person B will have 5 choices and the other 5 persons will have 5! Choices.

⇒ number of arrangements = 2×5×5! = 1 200

→ But Person A also , can choose one of the 5 places in between the two extremes .

If he chose one of those 5 ,person B will have 4 choices and the other 5 persons wil have 5! Choices.

⇒ number of arrangements = 5×4×5! = 2 400

In Total they can be arranged in :

1200 + 2400 = 3600 ways

3 0
1 year ago
What is the percent change in the price of a gallon of gas, to the nearest whole percent?
Hatshy [7]

Answer: 3.499 now 3.079 is correct

8 0
3 years ago
Will Mark Brainliest
Mademuasel [1]

we are given with the data of a parabola with vertex at (2, 2) and directrix at y  = 2.5. the formua should be ax^2 + b x + c = y because of the directrix. 

(x-h)^2 = 4a (y-k)

(x-2)^2 =4a (y-2) 

a is the equidistant distance from focus to vertex and from vertex to directrix that is equal to -0.5

then the  answer is 

(x-2)^2 =-0.5*4 (y-2) 

x2 - 4x + 4 = -2y +4

x2-4x+2y = 0

answer is C

4 0
2 years ago
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