an item is regularly priced at $90. John bought it on sale for 20% off regular price. How much did John pay
2 answers:
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<u>Solution-</u>
The given inequalities are,
<u>Part A</u>
As the former inequality is only '<' so it will be represented as dotted line, but in case of the later inequality there is '≥' so it will be represented as a solid line.
This happens because in only '<, >' the values must be either lesser or greater than y, they can't take the values of y, but in case of '≤, ≥' the values can be equal to y.
Taking origin (0, 0) and putting in the first inequality.
As the equation does not satisfy, so the shaded area will be on the other side of the origin.
Again taking origin (0, 0) and putting in the second inequality.
As the equation does not satisfy, so the shaded area will be on the other side of the origin.
The second attachment contains the feasible region.
<u>Part B</u>
In order to know whether the point (3, −7) is included in the solution area for the system or not, we must put it in both the equations, if it satisfies both then only it is within the solution area.
As the point (3, -7) only satisfies first inequality, but not the second inequality so this point won't be in the solution area.
Answer:
Step-by-step explanation:
Given
Required
Determine an equivalent expression
In trigonometry:
In
Substitute for
in
Hence, the equivalent expression is:
Answer:
1. 3.14
Step-by-step explanation:
If we have
That just equals
For example, consider function
The inverse of that function is
So
If we compose the function, f(x) into f^-1(x).
We get
That proof of that.
1. Here x=f^-1(3.14)and f(3.14) cancel out so the answer is 3.14
2. We first find f(-7) which is -12,
We then find f(-12)= 5 so the answer here is 5.