Answer:
19. 1 do 4^5 which is 1024 then do 1024^0 which is 1
21. 0.000064 do 5^-2 which is 0.04 then do 0.04^3 which is 0.000064
23. 2.33 do 9^4 which is 6561 then do 6561^-2 which is 2.32305731 so you round it to 2.33
btw you should talk to me more
Scientific notation implies that all the zeros are taken away and replaced with a 10 raised to whatever appropriate power would be necessary to make the number in scientific notation equal to the original number.
In the number 780,000,000, we can see that there are 7 zeros, but the number before the zeros has two digits, so we need to tuck the decimal point in there, because the number has to be between 1 and 10 for math reasons.
7.8 ... but what do we raise it to? We know it has to be 10, but to what power? Well, we just count how many places to the left the decimal point has traveled. From the original number, the decimal point shifted 8 places to the left, so that is the number that we will raise the 10 to.
The final number looks like this:
![7.8 * 10^8](https://tex.z-dn.net/?f=7.8%20%2A%2010%5E8)
780,000,000 in scientific notation is <span>
![7.8 * 10^8](https://tex.z-dn.net/?f=7.8%20%2A%2010%5E8)
Hope that helped =)</span>
Answer:
![area = 200.96 \: {units}^{2} \\ circumfrence = 50.24 \: units](https://tex.z-dn.net/?f=area%20%3D%20200.96%20%20%5C%3A%20%7Bunits%7D%5E%7B2%7D%20%20%5C%5C%20circumfrence%20%3D%2050.24%20%5C%3A%20units)
Step-by-step explanation:
The formula to find the area and circumference of a circle is:
![area = \pi {r}^{2} \\ circumfrence = 2\pi \: r](https://tex.z-dn.net/?f=area%20%3D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20%20%5C%5C%20circumfrence%20%3D%202%5Cpi%20%5C%3A%20r)
<em>*</em><em>no</em><em>te that pi is 3.14*</em><em> </em>Therefore the area is:
![formula = \pi {r}^{2} \\ 3.14 \times {8}^{2} = \\ 3.14 \times 64 = 200.96](https://tex.z-dn.net/?f=formula%20%3D%20%5Cpi%20%7Br%7D%5E%7B2%7D%20%20%5C%5C%203.14%20%5Ctimes%20%20%7B8%7D%5E%7B2%7D%20%20%3D%20%20%5C%5C%203.14%20%5Ctimes%2064%20%3D%20200.96)
Therefore the circumference is:
![formula = \: 2\pi \: r \\ (2)(3.14)(8) = \\ 3.14 \times 16 = 50.24](https://tex.z-dn.net/?f=%20formula%20%3D%20%5C%3A%202%5Cpi%20%5C%3A%20r%20%5C%5C%20%282%29%283.14%29%288%29%20%3D%20%20%5C%5C%203.14%20%5Ctimes%2016%20%3D%2050.24)
Answer:
Step-by-step explanation:
4 4/5= 24/5 24/5\4/5=6/5= 1/15
I don't know your exact question but 5400 divided by 8 is 675