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grigory [225]
3 years ago
10

An identity thief watches someone enter a 4-digit PIN and manages to see the first two digits. If the thief tries guessing

Mathematics
1 answer:
Otrada [13]3 years ago
3 0

Answer:

100

Step-by-step explanation:

i dont know if im right though i hope this helps ^^

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Minus then changes from 115.5 inches tall to 23.1 inches tall. What percent of change is that?
strojnjashka [21]

Answer:

80%

Step-by-step explanation:

23.1/115.5=0.2

1-0.2=0.8=80%

4 0
3 years ago
How many hours is one quarter of a day?​
Elena-2011 [213]

Answer:

6

Step-by-step explanation:

24/4 is 6, making there be six hours in a quarter of a day

7 0
2 years ago
Quiana has 5 times more text messages from Yolanda than from Pierre. Quiana has 30 text messages from Yolanda. Which equation ca
VladimirAG [237]

Answer:

p=\frac{30}{5}

Step-by-step explanation:

Quiana has 5 times more text messages from Yolanda than from Pierre, we also know that she actually has 30 text messages from Yolanda. In other words, 30 texts from Yolanda is 5 times more text messages than from Pierre.

Thus, if we call p the number of texts messages from Pierre we would have that

p=\frac{30}{5} (since 30 texts from Yolanda is 5 times more than p, we can divide by 5 to find p)

And if we solve this equation we would get that Quiana has 6 text messages from Pierre

4 0
3 years ago
Connor scored 14,370 points in a game amy scored 1,089 fewer points than conor . how many points did amy score
Mice21 [21]
Amy scored 13,281 points. 
7 0
3 years ago
Read 2 more answers
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
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