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olga55 [171]
3 years ago
15

What is the circumference of a circle with a diameter of 8 feet? Use 3.14 for

Mathematics
1 answer:
attashe74 [19]3 years ago
3 0

Answer:

The correct answer is B. 25.12

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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}
aliens&seconds\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
7&2\\
a&3600
\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
18z-13=-4 solve for z
Murljashka [212]

Answer: 20 ;)

Step-by-step explanation:

4 0
3 years ago
Is the measurement that combines both the speed and direction of a
Kryger [21]
Velocity is a measure of both speed and direction of motion. Velocity is a vector, which is a measurement that includes both size and direction. Velocity can be represented by an arrow, with the length of the arrow representing speed and the way the arrow points representing direction.
4 0
2 years ago
Hiiooo! Can someone please help with this!❤️:)
denis23 [38]
It will be 256.20 I hope I helped
8 0
3 years ago
Suppose the poll in the previous question was conducted by email, and those conducting the survey are concerned about the possib
mr_godi [17]

Answer:

Throw this sample out and start over again with a better sampling method

Step-by-step explanation:

Biased sampling leads wrong results, since the sample doesn't represent the population which is aimed to be surveyed. Higher/lower confidence level or t distribution cannot correct it.

Confidence level gives the probability of rejecting null hypothesis while it is true. And t-interval is used when the sample size is small or population standard deviation is unknown.

Before choosing confidence level or type of the statistic to infer results, one must follow random sampling not biased.

3 0
3 years ago
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