9x + 4 ≤ 58
=> 9x ≤ 58 - 4
=> 9x ≤ 54
=> x ≤ 54/9
=> x ≤ 6
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1/6x − 2 > 3
=> 1/6x > 3 + 2
=> 1/6x > 5
=> x > 5×6
=> x > 30
Step-by-step explanation:
Let "c" be the original number of classrooms.
The 1200/c was the original number of students per classroom.
----
Equation:
1200/(c-4) = (1200/c)+10
Multiply thru by c(c-4)
---
1200c = 1200(c-4)+10c(c-4)
---
1200c = 1200c-4800 + 10c^2-40c
----
10c^2-40c-4800 = 0
c^2-4c-480 = 0
Factor:
(c-24)(c+20) = 0
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Positive solution:
c = 24 (# of classrooms originaly planned)
Yes! 2+2=4, and 2*2=4.
Both are equivalent but have different mathematical operations.
It's not a function because the x value 2 has two y values
Answer:
-2(x^2+2)
Step-by-step explanation:
1. x^2-3x^2-4
= -2x^2-4
2. -2(x^2+2) factor completely :)
