B. 15 because
-18+x=-3
X= -3 + 18
X = 15
Answer: The required lifetime value is 11.27.
Step-by-step explanation:
Since we have given that
Mean value = 11 hours
Standard deviation = 1 hour
The total lifetime of all batteries in a package exceeds that value for only 5% of all packages.
So, α = 0.95, z= 1.645
n = 9
So, the lifetime value would be

Hence, the required lifetime value is 11.27.
5(x + 2) + 6(x - 3) = 25
Simplify.
5x + 10 + 6x - 18 = 25
Add like terms.
(5x + 6x) + (10 - 18) = 25
Simplify.
11x - 8 = 25
Add 8 to both sides.
11x = 25 + 8
Simplify.
11x = 33
Divide both sides by 11.
x = 3
~Hope I helped!~
The first ten letters of the alphabet can be arranged 3,628,8000 different ways.
Answer: She can sell lemonade, she can dog sit with her mom/sister/dad or brother or whoever, She can make things and sell them, She can have a garage sell with her family. (Just some few ways) :3