Answer:
it 7{-2}= 9/1 and it equals to=9
Step-by-step explanation: 7{-2)= 9/1=9
You can reduce the first one by combining the ab and the ba term
Answer: The number of girls in the auditorium is represented by the algebraic expression y=(4x +72) /5
Step-by-step explanation:
Hi, to answer this question we have to analyze the information given:
- <em>Number of boys added: 18
</em>
- <em>Ratio of boys to girls: 5:4
</em>
So, the total number of boys is:
x + 18
Number of girls = y
Number of boys / number of girls = 5/4
(x+18) /y = 5/4
Solving for "y"
4 (x +18) =5 y
4x +72 = 5y
(4x +72) /5 = y
The number of girls in the auditorium is represented by the algebraic expression y=(4x +72) /5
for an expression or relation to be a function, it must not have any x-coordinate values repeated, let's check this one
![\bf (6,3), (\stackrel{\stackrel{rep eated}{\downarrow }}{-1},2), (\stackrel{\stackrel{rep eated}{\downarrow }}{-1},-1), (4,3)\qquad \textit{not a function}](https://tex.z-dn.net/?f=%5Cbf%20%286%2C3%29%2C%20%28%5Cstackrel%7B%5Cstackrel%7Brep%20eated%7D%7B%5Cdownarrow%20%7D%7D%7B-1%7D%2C2%29%2C%20%28%5Cstackrel%7B%5Cstackrel%7Brep%20eated%7D%7B%5Cdownarrow%20%7D%7D%7B-1%7D%2C-1%29%2C%20%284%2C3%29%5Cqquad%20%5Ctextit%7Bnot%20a%20function%7D)
What’s the original question and I can help!