X is less than or equal to 4
Answer:
1.2%
Step-by-step explanation:
List all the possible pairs and divide 1 by the sum.
Since there were 86 possible pairs,
1/86 is nearly equal to o.o12
The answer is 8 water in each cup.
Answer: x=-7/2 y=29/2
Steps:
Use the elimination method
Multiply -3x+y=4 by 5 to make the coefficient next to the y in both equations the same
5(-3x+y=4)
-15x+5y=20
Then, subtract to eliminate the y
-15x+5y=20
- -9x+5y=-1
= -6x=21
Divide both sides by -6 to isolate x
= x= -7/2
Next substitute -7/2 into x in one of the equations
-3(-7/2)+y=4
-21/2+y=4
Add 21/2 from both sides to isolate y
y=29/2