There is no underlined digit that I see, but I think they're asking you to just round. In that case the answer would be 0.4
Answer: Power of a power property.
Power here is another word for exponent.
Answer: she received 21.875 hours of sleep during the 4 nights.
Step-by-step explanation:
Rosalie is following a geometric sequence(GP) by having a common rate of sleep .
as 75% or 0.75%.
Formula for a sum in GP=
, where a= first term, r = common ratio, n= number of terms.
Put a= 8, r=0.75 and n =4, we get
![Sum=\dfrac{8((0.75)^4-1)}{0.75-1}](https://tex.z-dn.net/?f=Sum%3D%5Cdfrac%7B8%28%280.75%29%5E4-1%29%7D%7B0.75-1%7D)
On simplifying we get
Sum =21.875 hours
Hence, she received 21.875 hours of sleep during the 4 nights.
Answer:
0
Step-by-step explanation:
(4-4)x(10)
(0)x(10)
0
Hope this helps!