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klemol [59]
3 years ago
12

What is the Order of Magnitude of the number of pennies equivalent to a quarter?​

Mathematics
1 answer:
Talja [164]3 years ago
3 0

Answer:

It is mainly used while doing scientific notation. If two numbers differ by one order of magnitude, one is about ten times larger than the other. If they differ by two orders of magnitude, they differ by a factor of about 100.A quarter is 0.25 dollars so the ratio between 1 dollar and a quarter is 1/0.25(it means the dollar and the quarter which is 0.25 dollars) and that equals =4

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4 0
2 years ago
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ki77a [65]

Answer:

10

Step-by-step explanation:

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A medical researcher says that less than 87​% of adults in a certain country think that healthy children should be required to
Lyrx [107]

Answer: It is not enough evidence to support the researcher's claim.

Step-by-step explanation:

Since we have given that

n = 500

\hat{p}=0.85

So, the hypothesis are as follows:

H_0:\hat{p}

So, the z value would be

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.85-0.87}{\sqrt{\dfrac{0.87\times 0.13}{500}}}\\\\z=\dfrac{-0.02}{0.015}\\\\z=-1.33

At α = 0.05

z= -1.64

So, 1.64<-1.33

So, we accept the null hypothesis.

Hence, it is not enough evidence to support the researcher's claim.

3 0
3 years ago
Keisha is walking around a track that is 400 yards long. She has walked around the track 5 times so far. How many more yards doe
Dimas [21]

Answer:

1520  yards

Step-by-step explanation:

Explanation:

Remember that  

1

mile is  

1760

yards, so  

2

miles is  

1760

⋅

2

, or  

3520

yards.

If she has walked the track  

5

times, then the total distance she has walked is  

400

⋅

5

, or  

2000

yards.

Do  

3520  yards (

2 miles) minus  

2000

yards, the distance Keisha has already walked.

3520  −  2000  = 1520

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