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algol [13]
3 years ago
13

Harold took five different samples of thirty-five randomly selected students from the 520 students he surveyed. The

Mathematics
1 answer:
mars1129 [50]3 years ago
3 0

Answer:

d!

Step-by-step explanation:

just took the test! gl

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–4b + 8c + 12 – 8b – 2c + 6
sertanlavr [38]

Answer:

-24

Step-by-step explanation:

-4-8= -12

8-2=6

12+6=18

-12b+6c+18

Greatest common factor = 6

-12/6=-2

6/6=1

18/6=3

D 6(-2b+1c+3)

-12(2)+6(-3)+18

-24+(-18)+18

-42+18= -24

-24

7 0
2 years ago
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Suzy earns $7.50 per hour she worked 32.5 hours last week what was the amount of her check
expeople1 [14]
$7.50 per hour times <span>32.5 hours equals $243.75
          $ 7.50 per hour
          x 32.5 worked hours
         ----------
          $243.75 is her check</span>
6 0
3 years ago
There is an alien machine which produces seven aliens every two seconds. At this rate how many aliens will produces in one hour?
lyudmila [28]
Well, there are 60 minutes in 1 hour, and there are 60 seconds in 1 minute, so in 60 minutes, there are 60 * 60 seconds, or 3600 seconds in 60 minutes, or 1 hour, therefore, in 1 hour there are 3600 seconds.

the machine makes 7 aliens in 2 seconds, how many will it make in 3600 seconds?

\bf \begin{array}{ccll}&#10;aliens&seconds\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;7&2\\&#10;a&3600&#10;\end{array}\implies \cfrac{7}{a}=\cfrac{2}{3600}\implies \cfrac{7\cdot 3600}{2}=a

that many.
3 0
3 years ago
Read 2 more answers
9. (12 pts) daniel is paying $600 for his auto insurance, and he is wondering if he is overpaying compared to his friends. he se
Karolina [17]

Answer:

Step-by-step explanation:

1) The sample and the population of this study is the friends who replied his email which includes in his contact list. then, the number of the replied to his email are 9 friends.

population: the whole friends include in his contact list.

3) Type I error occurs when one incorrectly rejects the null hypothesis

Here there is possibility of type I error

7 0
3 years ago
What is 4/ 6.4 simplified as?
Mashcka [7]

Answer:

−  

8

5

​  

=−0.62500

Step-by-step explanation:

I used something Imao-

3 0
2 years ago
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