The value of nth term is calculated by the equation,
an = (a1) x r^(n - 1)
Using this equation to find for the common ratio,
-8192 = 8 x r^(6 - 1)
The value or r is -4. Using the same equation to find for the 12th term,
a12 = 8 x (-4)^(12 - 1)
a12 = -33554432
Answer:
Step-by-step explanation:
The four walls have a linear length of (9 m)×4 = 36 m. Of that, the two 1-meter doors are not painted, so the linear length of the painted area is 34 m. The painted area is 2 m high, so the total area being painted is ...
A = LW
A = (34 m)(2 m) = 68 m²
The amount of paint needed for this area is ...
(68 m²) × (1 L/(10 m²) = 6.8 L
If we assume the paint only comes in units of 1 L, then Heather will need 7 L of paint.
The cost of 7 L of paint is ...
(7 L) × ($3.75/L) = $26.25
Heather will need 7 L of paint, for a total cost of $26.25.
When ur dividing with exponents, u subtract the exponents
10^12 / 10^4 = 10^(12 - 4) = 10^8 <== ur exponent is 8
I'm bad at explaining things, so I will show you an example.
Equation: 4t² = 25
1). Take the square root of both terms
√4t² = √25
√4t² = 4t
√25 = 5 (5x5 = 25)
Now, you are left with 4t = 5
Divide each side of that equation by 4
4t = 5
----- ----
4 4
t = 5/4 or -5/4
I don't know why, but the answer can be positive or negative. I'm still trying to understand that :)
I hope that this helps you a little bit!