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vova2212 [387]
3 years ago
14

Please help ASAP! Will give BRAINLIEST! Please read the question THEN answer correctly! No guessing.

Mathematics
1 answer:
GarryVolchara [31]3 years ago
5 0

Answer:

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

Step-by-step explanation:

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

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Sergeeva-Olga [200]

Answer:

x=9

Step-by-step explanation:

hello :

use thales- rul :

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(3x-20)72= 9×56

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3x=27

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3 years ago
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3 years ago
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Find an equation of variation in which y varies inversely as x and y=5 and x=21. Then find the value of y when x=10.
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Answer:

see explanation

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