Answer:
Step-by-step explanation:
Solve 1 equation for 1 variable. ( Put in y = or x = form)
Substitute this expression into the other equation and solve for the missing variable.
Substitute your answer into the first equation and solve.
Check the solution.
Your answer is 6
Explanation so
L=15
W=4
D=2
15x4=60
60x2=120
Then you use 120divide it by 20 (per hour) and your answer is 6hours
Answer:
2:1
Step-by-step explanation:
average age of both = 40
average age of teachers = 35
average age of professors = 50
35 + 35 + 50 = 120
120 / 3 = 40
Answer: all functions start with a y= so there
Step-by-step explanation: