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
How to solve this problem
Pavlova-9 [17]
For this one you can use 3/8 + 3/8 since 3+3 is equals to 6 and the 8 stays as it is.
I hope this helps.
YOU'RE WELCOME :D
4 0
3 years ago
Can you help me solve this question
IRINA_888 [86]

Answer: Coordinates: (1,3) length RS: 3 length RT: 2 ST: 3.6

Step-by-step explanation:

a^2+b^2=c^2

3^2+2^2=c^2

9+4=c^2

13=c^2

3.6=c

3 0
1 year ago
PLZ HELP ME!!!!!
gayaneshka [121]

Answer:

1. (0, 1)


Step-by-step explanation:

Put x = 0 then work out the values of y:0

y = 3^0 = 1  y-intercept is (0,1)

y = 0,25^x , y = 0.25^0 = 1

All the others are done in same way



4 0
3 years ago
HHHHHHHHHEEEEEEEEEELLLLLLLLLLPPPPPPPPP ILL FAIL MY CLASSSSSSSSSSSSSS
timurjin [86]

Answer:

c is the right answer of this

3 0
2 years ago
Read 2 more answers
Given the following functions f(x) and g(x), solve (f ⋅ g)(3) and select the correct answer below:
Ksenya-84 [330]
I believe you may have the order incorrect. If we were looking at g(f(x)) the answer would be 47. We would get this by sticking the 3 in for x in f(x) and solving, which would give us 48. We would then stick that answer in for x in the g(x), giving us 47. 

In its current order the answer would be 28. 
6 0
3 years ago
Other questions:
  • HELPPPPP MEEEEEE PLZZ
    5·2 answers
  • Round 8.293 to the place named hundredths
    15·2 answers
  • Solve x + 3y = 9<br> 3x − 3y = −13
    8·2 answers
  • You can buy ? yen with $560
    13·2 answers
  • A runner charted how long it took her to run certain distances. Here is the
    11·1 answer
  • HELP WITH PROBLEMS 34 and 35<br> THIS WILL GIVE YOU 15 points
    12·2 answers
  • What is a - 2 +3 = -2
    15·1 answer
  • The measures of two sides of a triangle are 4in and 13in. Find all possible values that the third side of this triangle can be?
    15·1 answer
  • What is the energy flow of a existing Rock to Sediment?
    6·2 answers
  • Derek scored a 15/25 on his math test and Meredith scored a 8/14 on her science test. Who had the best score? Explain.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!