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GREYUIT [131]
4 years ago
15

3. A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird r

efuge if they watched birds as a hobby. Which of the following best explains whether the reporter's data is valid or not?
A. The data is valid for the entire city because the bird refuge is located in the city.

B. The data is not valid for the entire city because people can have more than one hobby.

C. The data is not valid for the entire city because bird watchers
are more likely to visit a bird refuge.

D. The data is valid for the entire city because a bird refuge is a good place to find people who like to watch birds.
Mathematics
1 answer:
ratelena [41]4 years ago
8 0

Answer:

try c

Step-by-step explanation:

i dont know

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What’s the square root of 25 plus 13
bulgar [2K]

Answer:

18

Step-by-step explanation:

√25+13= 5+13=18

6 0
4 years ago
Tickets to the school play cost $9 for adults and $5 for students. The Wilson family bought 3 adult tickets and 4 student ticket
Paha777 [63]

A

Because of 3 adults bought 3 tickets, 9 x 3. 9(3)

4 students bought 4 tickets, 4 x 5, 4(3)

3 0
3 years ago
Man i wish i could see this answer
strojnjashka [21]
<span>Man, I wish I could see this answer.
Just copy you that the best answer.</span>
7 0
4 years ago
Maggie can paint a fence in 9 hours, but Tom needs 12 hours to paint the same fence. How long does it take them to paint the fen
ehidna [41]

Working together, Maggie and Tom can paint the fence in 5.1 hours

<h3><u>Solution:</u></h3>

Given that,

Maggie can paint a fence in 9 hours

So in 1 hour maggie paints, \frac{1}{9} of the house

Tom needs 12 hours to paint the same fence

So in 1 hour, tom can paint \frac{1}{12} of the house

To find: time taken to paint the fence if they work together

Let "a" be the time taken to paint the fence if they work together

So working together, in 1 hour, they can paint \frac{1}{a} of the house

We can frame a equation as:

To see how much of the fence they can paint together in one hour, we add these together.

\frac{1}{9} + \frac{1}{12} = \frac{1}{a}

\frac{1}{a} is how much of the fence they can paint together in one hour.  Therefore "a" is the number of hours it will take them both to paint the fence

On solving,

\frac{12 + 9}{12 \times 9} = \frac{1}{a}\\\\\frac{1}{a} = \frac{21}{108}\\\\a = \frac{108}{21} = 5.1428

So working together, Maggie and Tom can paint the fence in 5.1 hours

4 0
4 years ago
Dolbear's law states the relationship between the rate at which Snowy Tree Crickets chirp and the air temperature of their envir
zysi [14]
The temperature would be 60.5°.

Substituting this into our formula, T = 50+(N-40)/4, we have

T = 50+(82-40)/4 = 50+42/4 = 50+10.5 = 60.5
6 0
3 years ago
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