Answer:
<em>Proved below</em>
Step-by-step explanation:
<u>System of Equations</u>
There are several ways to solve a system of linear equations. One of the most-used is the method of elimination which consists in adding two or more equations to eliminate one or more variables.
The system shown in the question has evidently no solutions because we have the same variables related in the exact same way in the left side of both equations and a different number as a result of those operations.
To prove the statement, let's multiply the first equation by -1

Adding both equations:

This false result comes from the fact that we tried to solve a system with no solutions. The only way we could have solved it is that both right sides had been equal
The answer is 50 because 5 x 10 is 50.
<span>3 tanks because he can do 400 miles on tank, and he's goin 1,100 miles, he does 400 miles with first tank, next tank he gets to 800 miles, and then he uses 3/4 of last tank to get to 1,100, he will then have 100 miles left on the tank though.</span>
Answer: Choosing the level of safety stock that assures a given service level.
Step-by-step explanation:
Safety Stock provides a buffer against stockouts, ensuring that service or production continues if there is a problem with inventory supply. Such problems can vary from price fluctuations to a supplier's inability to fill an order.
The goal of safety stock is not to totally eliminate the risk of stockout as this would be too expensive and impossible in some industries such as hospitality where inventory has a short shelf life.
While safety stock may reduce the stockout cost, it is not the primary consideration in determining the level of safety stock.