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
Murljashka [212]
4 years ago
14

One solution to the problem below is 9 what is the other solution w^2-81=0

Mathematics
1 answer:
Blizzard [7]4 years ago
4 0

Second degree equations always have two (not necessarily different) solutions. We are told that 9 is one solution to w² - 81 - 0. To find the other, we can solve it for w and look for both.

w² - 81 = 0

w² = 81

w = √81

w = 9 OR w = -9

When solving by square roots, you need the solution and its opposite. That's because while 9 * 9 = 81, (-9) * (-9) = 81 as well.

The other solution is -9.

You might be interested in
What are the domain and range of f(x) = (1/6)x + 2? domain: ; range: {y | y > 0} domain: ; range: {y | y > 2} domain: {x |
Trava [24]

Sir you posted question and answer? or are providing examples of preferred format?

7 0
3 years ago
Read 2 more answers
PLEASE HELP! <br>What is the distance from Z= (16,−15) to the x-axis?
SCORPION-xisa [38]

Answer:

15 units

Step-by-step explanation:

Distance from the x-axis is measured vertically, so you would look at the second number of the coordinates, the y value. Point Z is 15 units below the x-axis.

3 0
3 years ago
Find the median of the list of data. 12, 18, 21, 25, 30, 43<br>​
Luba_88 [7]
Median is the middle number
=21 and 25
(21+25)/2
=23
4 0
3 years ago
WILL GIVE BRAINIEST IF CORRECT<br><br> Which of the following doesn't belong? Explain.
Law Incorporation [45]

Step-by-step explanation:

a. 5x² - 80

b. 5(x² + 4x - 4x -16)

5(x² - 16)

5x² - 80

c. 5x² - 20x + 20x - 80

5x² - 80

d. 5x² - 11

D doesn't belong because 5x² - 11 is not the answer to A, B, or C.

4 0
3 years ago
Read 2 more answers
What is the volume of the right rectangular prism, in cubic centimeters?
mylen [45]

Answer:

108 cm³

Step-by-step explanation:

Formula: V = w×h×l

Solution: V = whl = 4·3·9 = 108

Hence, the answer is 108 cm³

8 0
3 years ago
Other questions:
  • Please help me.......
    15·1 answer
  • HELP!! Which pair of statements is true
    9·1 answer
  • I need an answer right now
    9·1 answer
  • A right angle measures ​
    5·2 answers
  • For the lines x=3t, y=1-2t, z=2-3t and x (3, 1, 4) +s(-9, 6, 9) (a) Show that the lines are parallel. (b) Calculate the distance
    15·1 answer
  • 10 teachers mark 500 exam papers in 30 hours. How many teachers are needed to mark 600 exam papers in 25 hours
    14·1 answer
  • Julio has a net pay of $ 537.00 each paycheck. He pays $ 142.00 in pre-tax deductions and taxes each paycheck. What is Julio's g
    13·1 answer
  • 11. The volume of rectargular prism is 144m². If the base area is
    5·2 answers
  • Find the length of . Round answer to nearest tenth. PLS HELP ASAP
    13·1 answer
  • 3. The value of a car in relation to the number of miles driven is given by the linear
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!