trielypJulia trielypJulia

10-06-2016
Mathematics

Answered

What are the solutions to the equation 9x2 = 49, rounded to the nearest tenth?

A.

2.3, –2.3

B.

5.4, –5.4

C.

7, –7

D.

21, –21

Verified Answer :

MAXTORRES27 MAXTORRES27

10-06-2016

I would go for A if anything

Answer Link

Ckaranja Ckaranja

10-06-2016

A.
2.3, –2.3

Working;
\(9x^{2} =49\)
\(x^{2} = \frac{49}{9}\)
x=\(\sqrt{ \frac{49}{9} }\)
x= +-2.3

Answer Link

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