Y = 2x x + y = −6 the answer should be like this (x,y) or ( , )
1 answer:
Answer:
(-2, -4)
Step-by-step explanation:
Given:
The system of equations to solve is given as:
In order to solve this system of linear equations, we use substitution method.
In substitution method, we substitute the value of any one variable in the other equation.
So, we substitute the value of 'y' from first equation in the second equation.
This gives,
Dividing both sides by 3, we get:
Now,
Therefore, the solution is (-2, -4)
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.. 60% + ?% = 100%
It should not take you long to realize the missing value is 40%.
Then the numbers on the top of the diagram ? and 28 are in the same proportion as 60% and 40%. You can solve this proportion in the usual way.
.. 60/40 = ?/28
.. 28*60/40 = ? = 42
The only remaining missing value is the sum of 42 and 28, which is 70.
.. 60% + ?% = 100%
It should not take you long to realize the missing value is 40%.
Then the numbers on the top of the diagram ? and 28 are in the same proportion as 60% and 40%. You can solve this proportion in the usual way.
.. 60/40 = ?/28
.. 28*60/40 = ? = 42
The only remaining missing value is the sum of 42 and 28, which is 70.