30:11
432/30 = 14.4
11 * 14.4 = 158.4
If it holds true for the entire school, 158 kids are home with the flu.
(1) 3x+2y=12
(2) -4x+6y=24
Solving the system of equations using the method of substitution:
Isolating y in the first equation:
(1) 3x+2y=12→3x+2y-3x=12-3x→2y=12-3x→2y/2=(12-3x)/2→y=(12-3x)/2
Replacing "y" by (12-3x)/2 in the second equation:
(2) -4x+6y=24
y=(12-3x)/2→-4x+6[(12-3x)/2]=24
Solving for x:
-4x+3(12-3x)=24
-4x+36-9x=24
-13x+36=24
-13x+36-36=24-36
-13x=-12
-13x/(-13)=-12/(-13)
x=12/13
Replacing "x" by 12/13 in y=(12-3x)/2
x=12/13→y=[12-3(12/13)]/2
y=(12-36/13)/2
y={[(13)(12)-36]/13}/2
y=[(156-36)/13]/2
y=(120/13)/2
y=(120/13)(1/2)
y=60/13
x=12/13; y=60/13
-x+2y=-12/13+2(60/13)
-x+2y=-12/13+120/13
-x+2y=(-12+120)/13
-x+2y=108/13
Answer: The value of -x+2y is 108/13
There's only one answer your answer.
Wut part ? Do u need answers
Answer:
<u>Cost in US$ = 12 - 16 - 24 - 36 - 40</u>
<u>Number of tickets = 3 - 4 - 6 - 9 - 10</u>
Step-by-step explanation:
1. Let's review the information given to us for solving the question:
For a high school basketball game, it cost's US$ 12 for every 3 tickets.
It means that every ticket costs US$ 4 (12/3 = 4)
2. Let's complete the table below
<u>Cost in US$ = 12 - 16 - 24 - 36 - 40</u>
<u>Number of tickets = 3 - 4 - 6 - 9 - 10</u>
For US$ 16 = 4 * 4
For US$ 24 = 6 * 4
For US$ 36 = 9 * 4
For US$ 40 = 10 * 4
