Maybe put them in order so I could possibly answer
Answer:
Option E
Step-by-step explanation:
Explicit formula of a geometric sequence is,
![T_n=a_1(r)^{n-1}](https://tex.z-dn.net/?f=T_n%3Da_1%28r%29%5E%7Bn-1%7D)
Here,
First term
common ratio
number of terms
If,
and ![a_2=9](https://tex.z-dn.net/?f=a_2%3D9)
Common ratio of the sequence ![r=\frac{a_2}{a_1}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7Ba_2%7D%7Ba_1%7D)
![r=\frac{9}{18}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B9%7D%7B18%7D)
![r=\frac{1}{2}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B1%7D%7B2%7D)
By substituting these values in the formula,
![T_n=18(\frac{1}{2} )^{n-1}](https://tex.z-dn.net/?f=T_n%3D18%28%5Cfrac%7B1%7D%7B2%7D%20%29%5E%7Bn-1%7D)
Therefore, Option E is the answer.
8/97 = 12/x.....8 oz to 97 mg = 12 oz to x mg
cross multiply
(8)(x) = (97)(12)
8x = 1164
x = 1164/8
x = 145.5 (or 145 1/2) mg
Answer:
y = 4sin( π/12) + 5
Step-by-step explanation:
For a sinusidal function :
y = Asin(w + c) + s
Where ; A = amplitude ; w= angular velocity, s = vertical Displacement, c = phase angle
A = (maximum - minimum) / 2
A = (9 - 1) /2 = 8/2 = 4 feets
w = 2π/T ; T = 24
w = 2π/24 = π/12
s = (maximum - minimum) / 2
s = (9 +1) /2 = 10/2 = 5
c = 0
Plugging our values into the general equation :
y = Asin(w + c) + s
y = 4sin( π/12) + 5
Answer: I don't believe i understand.
Step-by-step explanation: