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Solve the equation. If necessary, round to the nearest tenth. 4x^2 =81 A 20.25, -20.25 B 2.25, -2.25 C 4.5 -4.5 D 9, -9

Solve the equation. If necessary, round to the nearest tenth. 4x^2 =81 A 20.25, -20.25 B 2.25, -2.25 C 4.5 -4.5 D 9, -9
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3 votes
Solve the equation.

If necessary, round to the nearest tenth.

4x^2 =81

A 20.25, -20.25
B 2.25, -2.25
C 4.5 -4.5
D 9, -9

User David Pean
by
8.3k points

1 Answer

2 votes
4x^2 = 81

4x = 9

x = 9/4

B is your answer

hope this helps

you must have a positive and a negative answer*
at least that is what my teacher told me lol
User Rolon
by
8.6k points
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