fait5ieshaueval fait5ieshaueval

23-02-2017
Mathematics

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What are the solutions to the equation 9x^2=49?
Round to the nearest tenth.
A. 2.3, -2.3
B. 5.4, -5.4
C. 7, -7
D. 21, -21

Respuesta :

wolf1728 wolf1728

23-02-2017

9x^2 = 49
x^2 = 49/9
x^2 = 5.4444444
x1 = 2.3333333333
x2 = - 2.3333333333
Answer is A

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