Answer:
.25 dollars
Step-by-step explanation:
divide everything by 4 to get .25
Answer:
C. ![a_n=(9)(\frac{2}{3})^{n-1}](https://tex.z-dn.net/?f=a_n%3D%289%29%28%5Cfrac%7B2%7D%7B3%7D%29%5E%7Bn-1%7D)
Step-by-step explanation:
Iterative geometric sequence:
![a_n=a_1x^{n-1}](https://tex.z-dn.net/?f=a_n%3Da_1x%5E%7Bn-1%7D)
Recursive geometric sequence:
![a_n=xa_{n-1}](https://tex.z-dn.net/?f=a_n%3Dxa_%7Bn-1%7D)
The equations are very similar and you only really need to rearrange it. The factor (2/3) and the first term (9) are given, so you can write the iterative equation:
![a_n=(9)(\frac{2}{3})^{n-1}](https://tex.z-dn.net/?f=a_n%3D%289%29%28%5Cfrac%7B2%7D%7B3%7D%29%5E%7Bn-1%7D)
And so the answer is C.
Answer:
r = -39
Step-by-step explanation:
So we are trying to solve the equation for r.
-6(2r + 8) = -10(r - 3)
Divide both sides by -2. (This will make distributing much easier.)
3(2r + 8) = 5(r - 3)
Distribute the 3 on the left side and the 5 on the right side,
6r + 24 = 5r - 15
Subtract 24 from both sides.
6r = 5r - 39
Subtract 5r from both sides.
r = -39
So now we have solve the equation.
I hope you find my answer and explanation to be helpful. Happy studying. :)
Notice the picture below
now, we know their perimeter are the same for both
thus 4(a+4) = 6a
solve for "a"