Answer:
v= 15
Step-by-step explanation:
all work is shown and pictured
Answer:
Rational
Step-by-step explanation:
simplifies to
.
Therefore, it is rational.

<em>Brainliest Appreciated. </em>
Answer:
The answer is 80%.
Step-by-step explanation:
During a certain day, a worker made 81 parts.
He usually does 45 parts per day.
Number of extra parts made = 
The percent by which he increased the number of parts he usually makes can be given as =
= 80%
Therefore, on that day, the percent increased by 80%.