What is the essential question? We need more details please :)
QUESTION:
A battery was charged. When the charging began, it was 23 percent full. After 30 minutes of charging, the battery was 89 percent full. how fast did the battery charge and how long did it take?
Solution :
<u>Given</u>
- Initial amount of charge = 23%
- Amount after charge = 89%
<u>procedu</u><u>re</u>
Let the rate of charging be r .
r = (change in charge level) / (time interval) = (89% - 23%) / (30 min) = 2.2 % per minute
charge = (rate of charging)(time) + (initial charge)
100% = r*t + 23%
100% = (2.2 %/min)t + 23%
Solve for t and get
t = [(100 - 23) / 2.2]
Answer = 35 min
Answer:
You don't have a question but if you're asking how much does he earn in the one pay period it's 80 x 12 =$960
Step-by-step explanation:
let me know if that helps otherwise i can give a different answer
Answer:
A) −13
Step-by-step explanation:
(x + 6)^2 = 49
Take the square root of each side
sqrt((x + 6)^2) = ±sqrt(49)
x+6 = ±7
Subtract 6 from each side
x+6-6 = -6 ±7
x =-6 ±7
Separating into 2 parts
x = -6+7 x = -6-7
x = 1 x = -13
