that’s all i could find atm
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
Hey there!
-7x + 21 > -14
SUBTRACT 21 to BOTH SIDES
-7x + 21 - 21 > -14 - 21
SIMPLIFY IT!
NEW EQUATION: -7x > -35
DIVIDE -7 to BOTH SIDES
-7x/-7 > -35/-7
SIMPLIFY IT!
x < 5
Therefore, your answer is: x < 5
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
2)) answer is 73
4)) answer is 5(x + 2)
