Answer:
139
Step-by-step explanation:
57+67+45=169÷3=139
Answer:
80km --- 49.7097mi
Step-by-step explanation:
thats quite slow... but please provide context then i can solve it for you
Answer:
r=4
Step-by-step explanation:
For this case we have the following system of equations:

Equating the values of y we have:

From here, we can clear the value of x.
We have then:

Then, we look for the value of y.
For this, we substitute x in any of the equations:
Answer:
The ordered pair solution of the system of equations, is given by:
Answer: 
<u>Step-by-step explanation:</u>
1st marble and 2nd marble
