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Anni [7]
3 years ago
6

40 is what percent of 800?

Mathematics
2 answers:
AleksandrR [38]3 years ago
7 0

Answer:

40/100 × 800

council the zeros

40× 8/1

320

patriot [66]3 years ago
6 0

Answer:

20%

Step-by-step explanation:

8/40 =x%/100%

800%/40=40x%/40

20=x%

x=20%

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Since it is stated that the machine he bought only predict about 80%. Thus, about 20% are still possible that there are oils in the land that he owned.
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5 0
3 years ago
Read 2 more answers
In a study to establish the absolute threshold of hearing, 80 male college freshmen were each seated in a soundproof room and a
Norma-Jean [14]

Answer:

Step-by-step explanation:

Hello!

To study the threshold of hering the researcher took a random sample of 80 male college freshmen.

The students underwent an audiometry test where a tome was played and they had to press a button when they detected it.  The researcher recorded the lowest stimulus level at which the tone was detected obtaining a sample mean of X[bar]= 22.2 dB and a standard deviation of S= 2.1 dB

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d= 0.46

The point estimate of the population mean of the threshold of hearing for male college freshmen is X[bar]= 22.2 db

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8 0
3 years ago
What is the difference of 13.2 - 6.56
vichka [17]

Answer:

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Step-by-step explanation:

Subtract : 13.2 - 6.56

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8 0
3 years ago
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2. 8.SP.1.2
andrew11 [14]

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A

Step-by-step explanation:

A. because the line of best fit has to be at best fit between the points so is a good approximation of where all the points are heading when you try to predict something.

8 0
3 years ago
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