The student wants a grade of x on his 3rd exam, so that the average of the 3 exam grades is 80:
72 + 78 + x
---------------- = 80
3
Solving for x: 72 + 78 + x = 240, or x = 90
If the student earns a grade of 90 or better on the 3rd exam, he will earn a course grade of 80 or better.
Answer:
Step-by-step explanation:
Since, the given formula pf finding unit labor cost is,
Where O is the hourly output per worker
And, W is the hourly compensation per worker.
Thus, the formula for solving hourly compensation per worker (W) is,
Answer:
72 + 26 = 98
Step-by-step explanation:
Answer:
Step-by-step explanation:
<h3><u>TO SOLVE:</u></h3>
Isolate by the x on one side of the equation.
<h3><u>SOLUTIONS:</u></h3>
First, subtract 3x from both sides.
Solve.
Sides are NOT equal.
Therefore, there are no solutions.