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Ede4ka [16]
2 years ago
13

Find the surface area

Mathematics
1 answer:
Olegator [25]2 years ago
6 0

Answer: 343.5

Step-by-step explanation: multiply 15 * 17 and you get 255 then divide that by 2 and you get 127.5.

Next you multiply 8 by 27 (which is 216)

Now add 127.5 and 216 and you get 343.5

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Is x = -12 a solution of x^2 +10x+25=49?
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Yes

Step-by-step explanation:

{x}^{2}  + 10x + 25 = 49 \\  {x}^{2}  + 10x + 25 - 49 = 0 \\  {x}^{2}  + 10x - 24 = 0 \\ (x + 12)(x -2 ) = 0 \\  \\ x  + 12 = 0 \\ x =  - 12 \\  \\  \\ x  - 2 = 0 \\x = 2

I hope I helped you^_^

8 0
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7 0
3 years ago
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Read 2 more answers
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<h3>lets create equation first then to solve it</h3>

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