Solve first for the solution of the inequalities. This can be done by replacing first the inequalities sign with the equal sign.
x + y = 1
2y = x - 4
The values of x and y from the system of linear equation are 2 and -1. This means that the intersection of the lines should be at point (2, -1).
Substitute 3 to x and determine the value of y from the second inequality.
2y ≥ x - 4
Substituting,
2y ≥ 3 - 4, y ≥ -1/2
Hence, the solution to this item should be the fourth one.
Answer:
Step-by-step explanation:
We have to find
If
=
Hence our answer is
This means that it is 8x-28=15+x. We let x equal the number. You can solve for the equation.
can be simplified to
, which is an irrational number around 1.732
I hope this helps!
