Answer:
F = 63
Step-by-step explanation:
28/44 = F/99
28/44 x 99 = F
F = 63
Answer:
The sum of the first 6 terms of the series is 504.
Step-by-step explanation:
Given that,
Common ratio in a geometric series is, r = 0.5
First term of the series, a = 256
We need to find the sum of the first 6 terms in the series. If a and r area the first term and common ratio of a series, then the series becomes:
![a,ar^1,ar^2,ar^3......](https://tex.z-dn.net/?f=a%2Car%5E1%2Car%5E2%2Car%5E3......)
The sum of n terms of a GP is given by :
![S_n=\dfrac{a(1-r^n)}{1-r}](https://tex.z-dn.net/?f=S_n%3D%5Cdfrac%7Ba%281-r%5En%29%7D%7B1-r%7D)
Here, n = 6
![S_n=\dfrac{256\times (1-(0.5)^6)}{1-0.5}\\\\S_n=504](https://tex.z-dn.net/?f=S_n%3D%5Cdfrac%7B256%5Ctimes%20%281-%280.5%29%5E6%29%7D%7B1-0.5%7D%5C%5C%5C%5CS_n%3D504)
So, the sum of the first 6 terms of the series is 504.
Answer:
The element is Boron(B)
Step-by-step explanation:
This is because on the periodic table, it shows that Boron has 5 protons and 5 electrons
It depends on what happens to the price of the item during the sale which is not stated in your problem. So if it cost 6 dollars and goes on sale it should be 6 dollars.