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goblinko [34]
4 years ago
10

In a day care group, nine babies are five months old and 12 babies are seven months old. How many full months from now will the

average age of the 21 babies first surpass 20 months old?
Mathematics
1 answer:
Sliva [168]4 years ago
8 0

Answer:

4.5 months a

Step-by-step explanation:

9 babies are five months old

Average age = 5 months

12 babies are seven months old.

Average age = 7 months

Currently the average age of the babies are: 5months + 7months = 12 months

21 babies = 12 months

How many full months from now will the average age of the 21 babies first surpass 20 months old

Surpassing 20 months old means above 20, = 21 months

5months + x + 7 month + x = 21months

Collect like terms

12 months + 2 x = 21 months

2x = 21 months - 12 months

2x = 9 months

2x = 9 months/2

x = 4.5 months

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sukhopar [10]

Answer: I and III

Step-by-step explanation:

We observe in the case provided that the researcher, who has no interest in the population to intervene, is going to carry out surveys to assess whether the neighborhood is a good place to live, obtaining the following conclusions:

i. The Minneapolis Resident Survey was an observational study.

ii. The Minneapolis Resident Survey was an experiment.

iii. The figure 50.1% is a descriptive statistic for the sample.

iv. The figure 50.1% is a statistical inference for the population.:By estimating the sample, obtained by a lower percentage of the total of the respondents, it is known that with a 95% confidence interval that the rating obtained from the respondents considering that the neighborhood is a good place to live was found between 0.44 and 0.50, taking this interval as a statistical inference for the population.

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3 years ago
What is the appropriate metric unit for measuring the capacity of a water cooler?
vodomira [7]
The best way to measure a volume of this size in Liters. This is a metric unit. There are 1000 liters in one cubic meter.
7 0
4 years ago
Read 2 more answers
What is the graph of the function f(x) = -x^2+x+20/x+4
mr_godi [17]
F(x) = (-x²+x+20) / (x+4)

-x²+x+20     | x+4
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 \\\\ 5x+20
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      \\\\\\\\\
 
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3 0
3 years ago
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kolbaska11 [484]

Answer:

6) 102

7) 58

NOTE: Supplementary add to 180° and Complementary add to 90°

<u><em>Please mark as brainliest if answer is right </em></u>

Have a great day, be safe and healthy  

Thank u  

XD  

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Answer:

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Step-by-step explanation:

7) add the two expressions.

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8) subtract g(x) from f(x).

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3 years ago
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