Answer:
17 obtuse triangle
Step-by-step explanation:
hope it helps
Answer:
The system has one solution
Step-by-step explanation:
we have the system of equations
----> equation A
----> equation B
Solve the system by substitution
substitute equation A in equation B
Solve for x
Multiply by 3 both sides to remove the fraction
Combine like terms

Simplify

<em>Find the value of y</em>



Simplify

The solution of the system is the point 
therefore
The system has one solution
Step-by-step explanation:
First, subtract 3 from 13.67 so we can find out the minutes only and not the minutes along with the monthly bill.
This will come out to be 10.67
Now, we will divide 10.67 by .11
This will come out to be 97.
This means he was billed for 97 minutes on the phone
Hope I helped!
Please tell me if this is wrong and my most sincere apologies if it is.
Answer:
Step-by-step explanation:
If the number solution is none means, the two lines are parallel to each other and they will not intersect
If the number of solution is one, then the two lines intersect at one point which is the solution of the two equations
If there are infinite solutions, then the two lines coincide and so has infinite solutions.