1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
USPshnik [31]
3 years ago
5

Find the solutions to the equation below 9x^2 -81=0

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

Step-by-step explanation:

=

−

±

2

−

4

√

2

x=2a−b±b2−4ac​​

Once in standard form, identify a, b, and c from the original equation and plug them into the quadratic formula.

9

2

−

8

1

=

0

9x^{2}-81=0

9x2−81=0

=

9

a=

a=9

=

0

b={\color{#e8710a}{0}}

b=0

=

−

8

1

c={\color{#129eaf}{-81}}

c=−81

=

−

0

±

0

2

−

4

⋅

9

(

−

8

1

)

√

2

⋅

9

x=2⋅9−0±02−4⋅9(−81)​​

You might be interested in
Which expression is equivalent to p x q x q x q x q x q x q x q x q ​
Anika [276]
The answer is p x q to the 9th power or the first answer.
3 0
3 years ago
Read 2 more answers
A store manager wishes to investigate whether there is a relationship between the type of promotion offered and the number of cu
Inga [223]

Answer:

the answer is D

Step-by-step explanation:

TOOK THE TEST

6 0
3 years ago
Read 2 more answers
Determine the value of x which r || s. then find m<1 and m<2.
slava [35]

Answer:

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
In 12 hours, how many more kilometers could the yellow car go than the red car? show your work
trasher [3.6K]

Answer:

144

Step-by-step explanation:

12 times 12

3 0
3 years ago
Need help solving these, if anyone is able to help, then please feel free! Help please ❤
crimeas [40]
# 3 is .4 because u multiply .2*.2
4 0
3 years ago
Other questions:
  • Solve the following equation for X: 1/2(5x+12)=2x-3 show your work
    14·1 answer
  • Tim predicts he will get 98 points on the next exam. If Tim actually earned 62 points, what was Tim's percent error? Round your
    9·2 answers
  • SOMEONE PLEASE HELP ME! I've been stuck on this for over 3 hours and i really need help! I'm offering 40 points!
    14·2 answers
  • Factor 225x2 - 1. A) (15x +1)(15x + 1) B) (15x - 1)(15x + 1) C) (15x - 1)(15x - 1) D) (125x - 1)(125x + 1)
    9·2 answers
  • Rotunjiti pina la unitati a)27,21 b)34,35 c)2,705 d)3,801 e)106,23 f)203,45 g)2004,7 h) 2005,8
    6·1 answer
  • Ratios equivalent to 20:30
    6·2 answers
  • Need help on this please
    13·2 answers
  • 5800 dollars is placed in an account with an annual interest rate of 9%. To the nearest tenth of a year, how long will it take f
    13·1 answer
  • Elizabeth has half as many CDs as Jennifer. Which equation would represent the number of CDs that Jennifer has? (Let e = the num
    9·1 answer
  • How to calculate sample size with standard deviation
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!