Paula is shopping for a party.she finds a pack of 6 rolls of streamers for $4.50. What is the cost of one roll of streamers ?
1 answer:
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Answer:
The two schools will have the same number of students in 5 years.
Step-by-step explanation:
The number of students for both these schools, after t years, can be modeled by linear functions.
Central High:
Currently has 3000 students.
Enrollment increases at an average rate of 100 students per year.
So after t years, the number of students that Central High will have is:
Washington High:
Currently has 2000 students.
Enrollment increases at an average rate of 300 students per year.
So after t years, the number of students that Washington High will have is:
If enrollments continue to change at the same rate, when will the two schools have the same number of students?
We have to find t for which:
So
The two schools will have the same number of students in 5 years.
Answer:
x = -3 + , -3 -
Step-by-step explanation:
Step 1: Isolate <em>x</em>'s
2x² + 12x = 7
Step 2: Factor
2(x² + 6x) = 7
x² + 6x = 7/2
Step 3: Complete the Square
x² + 6x + 9 = 7/2 + 9
(x + 3)² = 25/2
Step 4: Solve for <em>x</em>
√(x + 3)² = √25/2
x + 3 = 5√2/2
x = -3 ± 5√2/2
Answer: (x) = 3 - 5x
Step-by-step explanation: