24-04-2014
Mathematics

contestada

What are the solutions to the equation x2 = 81? A. 40.5 only B. 40.5 and –40.5 C. 9 and –9 D. 9 only

Respuesta :

Аноним Аноним

24-04-2014

[tex]x^2=81\ then\ x=9\ and\ x=-9\\\\because:(-9)^2=81\ and\ 9^2=81[/tex]

[tex]x^2=81\to x=-\sqrt{81}\ and\ x=\sqrt{81}\to x=-9\ and\ x=9[/tex]

Answer Link

Ashtonnnnnn Ashtonnnnnn

07-02-2020

Answer:

C. 9 and -9

Step-by-step explanation:

Answer Link

Otras preguntas

How do the terms polymer and monomer apply to the structure of protein molecules?

What graph represents a function with a growth factor of 5?

Graeme is inviting 7 friends to a party.Each friend wants 4 cookies and each box has 12 cookies. How many boxes should Graeme get?

kit says to pour 4 fluid ounces of juice into each bag. How many ice pop bags can you fill with 1 quart of juice?

0 = –2x^2 + x + 3 What are the a,b,c values

hey, I've been doing this for like an hour so I need your help please make it simple because I read a bunch of articles and watched videos but still do not unde

how would you ask your teacher name in spainsh

What does potential and kinetic energy have in common

How is electricity helping crocodiles in South Florida

Please someone help best answer gets brainleist