A robot is expected to filter pollution out of at least 350 liters of air and water. It filters air at the rate of 50 liters per
2 answers:
Answer:
Step-by-step explanation:
we are given that A robot is expected to filter pollution out of at least 350 liters of air and water.
Also It filters air at the rate of 50 liters per minute, and it filters water at the rate of 20 liters per minute.
The inequality for number of minutes the robot should filter air (A) and water (W) to meet this expectations can be writte as follows:
Hence the required inequality has been formulated.
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Answer:
The competition can be played in 7 different ways
Step-by-step explanation:
First game : X
Second game : Y
Third game : Y
After that either X or Y can win
<h3>¹Case - 1: Y wins the fourth game:</h3>The competition ends with Y winning as he/she won 3 games in a row
<h3>Case - 2: X wins the fourth game:</h3>more games are required to decide the winner
<h3>Sub-case - a: X wins the fifth game:</h3>more games are required to decide the winner
<h3>²Sub-sub-case - i: X wins the sixth game:</h3>The competition ends with X winning as he/she won 3 games in a row
<h3>³⁻⁴Sub-sub-case - ii: Y wins the sixth game:</h3>The competition ends after the seventh game. Whoever wins seventh game wins the competition as he/she would've won 4 games in total by then.
<h3>Sub-case - b: Y wins the fifth game:</h3>more games are required to decide the winner
<h3>⁵Sub-sub-case - i: Y wins the sixth game:</h3>The competition ends with Y winning as he/she won 4 games in total
<h3>⁶⁻⁷Sub-sub-case - ii: X wins the sixth game:</h3>The competition ends after the seventh game. Whoever wins seventh game wins the competition as he/she would've won 4 games in total by then.
∴<u>The competition can be played in 7 different ways</u>
