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kirill [66]
3 years ago
13

Charlie has already spent 8 minutes on the phone, and he expects to spent 1 more minute with every phone call he routes. In all,

how many phone calls does Charlie have to route to spent a total of 44 minutes on the phone?
Mathematics
1 answer:
lisov135 [29]3 years ago
8 0
Idk tbh I just need this first answer
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I need help with this
Angelina_Jolie [31]
Answer: 256

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3 0
1 year ago
(b) Given that
Gnesinka [82]

Answer:n=-2 or n=4

Step-by-step explanation:

Q is not inversible if det(Q)=0

\left|\begin{array}{ccc}6&7&-1\\3&n&5\\9&11&n\end{array}\right| =0\\\\\\\\6(n^2-55)-3(7n+11)+9(35+n)=0\\\\n^2-2n-8=0\\\\\Delta=36=6^2\\\\n=\dfrac{2-6}{2} =-2\ or\  n=\dfrac{2+6}{2}=4\\

4 0
2 years ago
Please help ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.
GarryVolchara [31]

Answer:

D. ( {x} - 2)^{2}  = 7

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3 {x}^{2}  - 12x = 9 \\ 3( {x}^{2}  - 4x) = 9 \\  {x}^{2}  - 4 x= 3 \\  {x}^{2}  - 4x + 4 = 3 + 4 \\  {x}^{2}  - 4x +  {2}^{2}  = 7 \\ ( {x} - 2)^{2}  = 7

5 0
3 years ago
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