Tao uses elimination to solve the following system of linear equations.
2 answers:
Given:
The system of equation is:
To find:
The solution of the given system of equations.
Solution:
We have,
...(i)
...(ii)
Add (i) and (ii) to eliminate the variable x.
Putting in (ii), we get
Divide both sides by 2.
Therefore, the solution of given system of equations is (0,4). Hence, the correct option is A.
You might be interested in
Answer:
5 kg
Step-by-step explanation:
To solve this problem, we can use the rule of three.
In fact, we know that:
- 1 kilogram is equivalent to 2.2 pounds
- The ratio between the mass in kilograms and in pounds is constant for every value of the mass
- Therefore, the mass in kilograms corresponding to 11 pounds can be found by writing the following equation:
Where
x is the mass in kilograms corresponding to 11 pounds.
Solving the equation for x, we find:
Answer:
The average rate of change is
Step-by-step explanation:
The average rate of change from x=a to x=b of f(x) is given by;
We want to find the average rate of change of the function represented in the table from x=-2 to x=2.
From the table f(-2)=25 and f(2)=9
The average rate of change from x=-2 to x=2 is