B:Solve the inequality as y < 2x-3.
D:Draw the line y=2x-3 as a dashed line.
E:Shade below the line.
This are the Correct Answers
:)
Answer:
The ordered pair is not a solution of the system D
explanation:
A.
y < -3
y ≤ 2/3x - 4
B.
y > -3
y ≥ 2/3x - 4
C.
y < -3
y ≥ 2/3x - 4
D.
y > -2
y ≤ 2/3x - 4
we know that
If a ordered pair is a solution of the system of inequalities, then the ordered pair must satisfy both inequalities (makes true both inequalities)
Verify each case
Case A) we have
----> inequality A
----> inequality B
Substitute the value of x and y of the point (3,-2) in both inequalities and then compare the results
Inequality A
----> is not true
therefore
The ordered pair is not a solution of the system A
Case B) we have
----> inequality A
----> inequality B
Substitute the value of x and y of the point (3,-2) in both inequalities and then compare the results
Inequality A
----> is true
Inequality B
----> is true
therefore
The ordered pair is a solution of the system B
Case C) we have
----> inequality A
----> inequality B
Substitute the value of x and y of the point (3,-2) in both inequalities and then compare the results
Inequality A
----> is not true
therefore
The ordered pair is not a solution of the system C
Case D) we have
y > -2 ----> inequality A
----> inequality B
Substitute the value of x and y of the point (3,-2) in both inequalities and then compare the results
Inequality A
----> is not true
therefore
The ordered pair is not a solution of the system D
Answer:
negative 9 plus or minus the square root of 17 divided by 8
Step-by-step explanation:
move all terms to one side
4x^2 + 9x + 4= 0
Use the quadratic formula
and you get negative 9 plus or minus the square root of 17 divided by 8
Answer: 17
Step-by-step explanation:
If the radiation level is 100%, it would take 2.4 days to take the radiation level to 50%. However, the situation implies that the radiation level is 25% only, so we need to take 25% from 2.4 days to know the timeframe for a room to be emptied from the radioactive gas. 2.4 days multiplied by 0.25 will give a result of 0.6 day - the timeframe needed to empty the room out of the radioactive gas.
