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Free_Kalibri [48]
3 years ago
8

A bookstore owner wants to collect data to find out customers' opinions of the variety of book genres available at the store. Wh

ich group should she survey to get the best random sample?
A.
twenty customers who asked to share their opinions of the books available at the bookstore
B.
thirty-five randomly selected customers who purchased books at the bookstore
C.
forty-five randomly selected people at the supermarket next door
D.
fifty randomly selected customers who visited the bookstore
Mathematics
1 answer:
Lyrx [107]3 years ago
7 0

Answer:

the answer would be D.

Step-by-step explanation:

I am not sure how to explain this but I hope this helped you

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If p is a point with polar coordinates ​(r,thetaθ​), the rectangular coordinates​ (x,y) of p are given by xequals=​_______ and y
Anuta_ua [19.1K]

Answer:

x = r cos theta and y = r sin theta

Step-by-step explanation:

cos theta = x / r  so:-

x = r cos theta

and sin theta = y / r, so

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5 0
3 years ago
How to solve 7m + 2n = 21 and 10m + 4n = -10 using substitution. Step by step please and thank you!
ryzh [129]
7m+2n=21
-7m      -7m

<u>2n</u>=<u>21-7m</u> 
2        2

n=<u>21-7m
</u>       2
<u>
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<u />-10m                   -10m

4(21-7m/2)= -10-10m

(84-28m/2)= -10-10m
    x2                x2

84-28m    = -20-20m
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<u>104</u> = <u>8m
</u>8         8

m=13

10(13) + 4n = -10
-130              -130

<u>4n</u> = <u>-140
</u>4         4
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</u>n= -35

If anything is unclear please feel free to ask.
5 0
3 years ago
Help plz
Gemiola [76]

Answer:

The 9th and 11th students are also boys.

Step-by-step explanation:

Every other student is a boy. Since the 7th student is a boy this means the 8th student is a girl.

You can also think of it with odd numbers. Every odd numbered student is a boy.

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Step-by-step explanation:

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3 years ago
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Answer:

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Step-by-step explanation:

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3 years ago
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