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kumpel [21]
3 years ago
12

Hee Sun wants to estimate the average world length in a book. She randomly chooses 20 words in the book, as shown. Based on this

sample, which is the best estimate of the mean word length in the book? (I chose D, but I’m not sure if I’m correct.)

Mathematics
1 answer:
VMariaS [17]3 years ago
8 0
You're right, its D, just did the problem and got the same answer

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A book sold 31,500 copies in its first month of release. Suppose this represents 8.9% of the number of copies sold to date. How
kogti [31]

Answer:

35,393,258

Step-by-step explanation

\frac{31,500}{x} =\frac{0.089}{100}

0.089x=3,150,000

x= 35,393,258.427

Rounded to the nearest whole number, that is 35,393,258.

7 0
2 years ago
V/7= 22 what does v=
Whitepunk [10]
<span>V/7= 22
Multiply 7 on both sides
Final Answer: V = 154</span>
8 0
3 years ago
Blank a function is the same as moving a function
earnstyle [38]

Answer:

Shifting/Translating the function

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please help and explain how you solved it. Thanks.
galina1969 [7]

Answer:

This is 0.14 to the nearest hundredth

Step-by-step explanation:

Firstly we list the parameters;

Drive to school = 40

Take the bus = 50

Walk = 10

Sophomore = 30

Junior = 35

Senior = 35

Total number of students in sample is 100

Let W be the event that a student walked to school

So P(w) = 10/100 = 0.1

Let S be the event that a student is a senior

P(S) = 35/100 = 0.35

The probability we want to calculate can be said to be;

Probability that a student walked to school given that he is a senior

This can be represented and calculated as follows;

P( w| s) = P( w n s) / P(s)

w n s is the probability that a student walked to school and he is a senior

We need to know the number of seniors who walked to school

From the table, this is 5/100 = 0.05

So the Conditional probability is as follows;

P(W | S ) = 0.05/0.35 = 0.1429

To the nearest hundredth, that is 0.14

3 0
3 years ago
Lisa reads an equal number of pages of a book every week. The graph below shows the number of pages of the book left to read, y,
iren [92.7K]

9514 1404 393

Answer:

  (a)  y = −50x + 250

Step-by-step explanation:

In case you don't realize that the graph starts at 250 and decreases by 50 for each increase of 1 in x, you can see if any of the equations match the given points. The only one that does is the first one:

  y = -50x +250

4 0
3 years ago
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