Answer:
3/8
Step-by-step explanation:
You don't know whether they are young or old and your not replacing them so your best answer is 3/8.
First step: x= ± √ 121
Second step and correct answer: x= ± 11
Because: x^2 = x= ± √
Honestly I don't know that is a really hard question
[ Answer ]

[ Explanation ]
- System Of Equations

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- Isolate x for x + x + 10 = 10: x = 0
For y = 10
Substitute x = 0
Y = 0 + 10
0 + 10 = 10
y = 10
X = 0
Y = 10
![\boxed{\bold{[] \ Eclipsed \ []}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cbold%7B%5B%5D%20%5C%20Eclipsed%20%5C%20%5B%5D%7D%7D)
Answer:
B
Step-by-step explanation: