Answer:
4
5(2)+5(7)
Step-by-step explanation:
Given,
The linear pair of the equation is,

Required
The solution of the linear equation.
Taking the equation first as,

Substituting the value of y in second equation then,

Substituting the value of x in first equation then,

Hence, the solution of the system is (1, -10).
Answer:

Step-by-step explanation:
Given matrix is,

Operations performed,
-10R₂ → R₂

3R₃ → R₃

Answer:
She drew the graph too steep, if she is going down at a constant rate of 300 ft per hour, at 1 hour she would be at 2,700 ft. it would take her about 10 hours to get down the mountain.
Step-by-step explanation:
In simple terms it is, -2-3= -5