Use any method to solve the equation. if necessary,

Ответ:

iamabouttofail

13.03.2022

We have that
9x² − 21 = 0

using a graph tool
see the attached figure

the solution is
x=-1.528----> -1.53
x=1.528----> 1.53
Use any method to solve the equation. if necessary, round to the nearest hundredth.9x2 − 21 =

Use any method to solve the equation. if necessary, round to the nearest hundredth.9x2 − 21 =

0,0(0 оценок)

Ответ:

ThatOneDumbAsian

13.03.2022

Mathematics

$x_{1}=1.53\\x_{2}=-1.53$

Step-by-step explanation:

The given quadratic equation is

$9x^{2}-21=0$

To solve this equation, we just have to isolate the variable, because the quadratic expression has only one variable, the linear term is not present. So

$9x^{2} =21\\x^{2} =\frac{21}{9}$

Now, we apply a square root, to have the variable complete isolated

$\sqrt{x^{2} }=\sqrt{\frac{21}{9} } \\x=\±1.53$

Remember that all square roots have two results, one positive and one negative.

Therefore, the solutions for this equation are

$x_{1}=1.53\\x_{2}=-1.53$

0,0(0 оценок)

Ответ:

heyItsLuna234

12.06.2020

Mathematics

Did you try watching a vid to see how to do it?

Step-by-step explanation:

0,0(0 оценок)

Use any method to solve the equation. if necessary, round to the nearest hundredth.9x2 − 21 = 0 4.58, –4.58 3, –3 0.65, –0.65 1.53, –1.53

Ответ:

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question