Answer:
Step-by-step explanation:
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5/7 can be written as 0.714285
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7/9 can be written as 0.777
∴ An irrational number between 5/7 and 7/9 is 0.72010010001.....
or u ca write other numbers also like
0.73010203.....
0.74090080007.....
For this case we must write a number of the form:
![a ^ b](https://tex.z-dn.net/?f=%20a%20%5E%20b%20%20)
Where,
a: power base
b: exponent of the power
We must write a power that complies with the following inequality:
![0](https://tex.z-dn.net/?f=%200%20%3Cb%20%3Ca%20%20)
Substituting values we have, for example:
![10 ^ 2](https://tex.z-dn.net/?f=%2010%20%5E%202%20%20)
Answer:
a power represented with a positive base and a positive exponent whose value is less than the base is:
![10 ^ 2](https://tex.z-dn.net/?f=%2010%20%5E%202%20)
Answer:
part B
Step-by-step explanation: if you doubled it, it would be 4 x 6 x 12 = 288. but 6 x 10 x 4 = 240. YOUR WELCOME :)
Answer:
Betsy will save $121 in 5 weeks.
Step-by-step explanation:
We can see that Betsy's savings are 3 times the saving of her last week. We can see that this is an geometric sequence as 1,3,9,..
To find the sum of our geometric sequence we will use
, where n is number of terms we are taking sum of, a is first term of sequence and r is common ratio of the sequence.
![S_{5}=1\cdot \frac{1-3^{5}}{1-3}](https://tex.z-dn.net/?f=S_%7B5%7D%3D1%5Ccdot%20%5Cfrac%7B1-3%5E%7B5%7D%7D%7B1-3%7D)
![S_{5}=\frac{1-243}{-2}](https://tex.z-dn.net/?f=S_%7B5%7D%3D%5Cfrac%7B1-243%7D%7B-2%7D)
![S_{n}=\frac{-242}{-2}=121](https://tex.z-dn.net/?f=S_%7Bn%7D%3D%5Cfrac%7B-242%7D%7B-2%7D%3D121)
Therefore, Betsy will save $121 in 5 weeks.
Answer: B, $78
Step-by-step explanation:
If the tip is 20% of the dinner cost, then we have to first find what is 20% of 65.
20% x 65 = 13. So the tip for the dinner is 13 dollars.
Now we have to add it to the original dinner cost.
65 + 13 = 78.
Therefore, the total cost of their meal is 78 dollars. So the answer is B, $78!