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Ivahew [28]
3 years ago
14

What does is the value of x in this problem

Mathematics
1 answer:
nekit [7.7K]3 years ago
3 0

Answer:

the value of x is 90.....

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700 cal out of the 2000
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Which expression is equivalent to – 12 + (-4/5) + 31 and includes the correct justification for the equivalence?
anyanavicka [17]

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b

Step-by-step explanation:

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write the equation of a line that is perpendicular to the line y=-3/7-15 and that passes through the point (9,2)
SashulF [63]

Answer:

Step-by-step explanation:

First substitue the coordinates to the equation so

x=9, y=2

you would get

2=-3/7(9) + b

we put b because we are trying to find the new slope

multiply the two numbers above

2=-3/6/7 + b

subtract the whole number from both sides

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in equation would be

y= -3/7 + 5/6/7

Let me know if there is an error.

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In 2000, the mayo clinic conducted a study of whether air dryers eliminate more germs than paper towels. researchers recruited 1
WARRIOR [948]

Answer:

This is an observational study based on a stratified sample.

Step-by-step explanation:

This study aimed to check which clean-up/drying up method after handwashing was more effective; that is, do dryers eliminate more germs than paper towels.

It involved 100 people that took part in the study. The 100 of them contaminated their hands and were instructed to wash their hands with soap and water for 15 seconds before the participants are randomly grouped into two strata; one stratum/group (consisting of 50 participants) that dries their hands with a dryer and another (also consisting of 50 participants) that dry their hands with paper towels.

An observational study is one in which data is collected only by monitoring the events of the study. The conductor of the study in no way tries to intervene or control any of the variables being studied. No control, no tweaking of factors, just observe and record data.

An observational study based on a stratified sample is an observational study that uses the stratified sampling method to carry out its objectives. It randomly puts each of the participants being observed into groups or strata. Each group of randomly assigned participants are then required to run the test for one of the variables being compared.

This is exactly what the study in the question describes. This is why this study is undoubtedly an observational study based on a stratified sample.

Hope this Helps!!!

3 0
3 years ago
5/10+13/100 <br> what is the value of the expression
cluponka [151]

Answer:

63/100

Step-by-step explanation:

6 0
3 years ago
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