Step-by-step explanation:
37.5 pounds - 29.25 pounds = 8.25 pounds
Answer:
n = 5
Step-by-step explanation:
100,000 = 10^n
Take the log of both sides
log 100,000 = log 10^n
log 100,000 = n * log 10
Dividing both sides by log 10
log 100,000 / log 10 = n * log 10 / log 10
n = log 100,000 / log 10
= 5 / 1
n = 5
The common difference, d, can be determined by subtracting the two consecutive values:
1 - 5 = -4
-3 - 1 = -4
-7 - -3 = -4
Then, using the equation:
an = a1+ d(n-1)
a_21 = 5 + (-4)(21 - 1)
a_21 = -75
The answer is letter D. I hope I was able to help you. Have a good day!
Answer:
Option A.
Step-by-step explanation:
12 cm, 17cm, 25 cm
Answer:
El pH del refresco es 3.42.
Step-by-step explanation:
Se puede calcular el pH del refresco usando la siguiente fórmula:
![pH = -log([H^{+}])](https://tex.z-dn.net/?f=pH%20%3D%20-log%28%5BH%5E%7B%2B%7D%5D%29)
En donde:
[H⁺]: es la cocentración de los iones H⁺ de la solución
Entonces, el pH es:
![pH = -log([H^{+}]) = -log(3.8\cdot 10^{-4}) = 3.42](https://tex.z-dn.net/?f=pH%20%3D%20-log%28%5BH%5E%7B%2B%7D%5D%29%20%3D%20-log%283.8%5Ccdot%2010%5E%7B-4%7D%29%20%3D%203.42)
El resutlado obtenido nos permite concluir que ese refresco es ácido.
Por lo tanto, el pH del refresco es 3.42.
Espero que te sea de utilidad!
