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Vladimir79 [104]
3 years ago
9

Reposting since it wasn’t answered. Increased points to 25.

Mathematics
1 answer:
insens350 [35]3 years ago
4 0

Answer:

a,b,d,e

answered in the first question

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Rico is estimating 139 x 18 Find his mistake and correct it.<br><br><br> 100 x 10 =1,000
mel-nik [20]
139 is suppose to be 140 and 18 is suppose to be 20, 140 x 20 = 2800
Home this works
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3 years ago
The distribution of the number of occurrences of the letter t on the pages of a book is found to be a normal distribution with a
Leno4ka [110]
The distribution of the number of occurrences of the letter t on the pages of a book is found to be a normal distribution with a mean of 44 and a standard deviation of 18. If there are 500 pages in the book, which sentence most closely summarizes the data?

A. The letter t occurs less than 26 times on approximately 170 of these pages. 

B. The letter t occurs less than 26 times on approximately 15 of these pages. 

C. The letter t occurs more than 26 times on approximately 420 of these pages. 

D. The letter t occurs more than 26 times on approximately 80 of these pages.

.Answer: 
<span>mean = 44 </span>
<span>sd = 18 </span>
<span>that means that "26" is 1 s.d. down, or at the 16th %ile </span>


<span>so, there is a .16 chance that "t" will occur less than 26 times on any single page. </span>
<span>consequently, there is a .84 chance that it will occur more than 26 times on any single page. </span>

<span>Using that information, and knowing that 16% of 500 is 80, and 84% of 500 is 420, can you see where "C" is correct? </span>
4 0
4 years ago
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Simplify the following expression:
Bas_tet [7]

Answer:

3x-8y+40z

Step-by-step explanation:

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2 years ago
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Hector built a tent shaped like a rectangular pyramid. The volume of the tent is 56 cubic feet. The area of the base of the tent
Ira Lisetskai [31]
Maybe use a Calculator and multiple the two number?
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How do you solve x+(2x + 40) + (3x - 50) = 15002
alina1380 [7]
1. Take away the parentheses. x+2x+40+3x-50=15002

2. Add the X’s together.
x+2x+3x= 6x —> 6x+40-50=15002

3. Subtract 50 from 40.
40-50= -10 —> 6x-10=15002

4. Move -10 to the right hand side to make it positive.
6x=15002+10

5. Add 15002 and 10 together.
6x=15012

6. Divide 15012 by 6. Which makes the answer X=2502
6 0
3 years ago
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