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
Illusion [34]
3 years ago
15

Find the zeros of the function: f(x) = x^2 - 4x - 21

Mathematics
1 answer:
IrinaK [193]3 years ago
5 0

Answer:

x = 7, x = -3

Step-by-step explanation:

We can find the zeros by factoring the equation using the zero product property.

x^2-4x-21 = 0

(x-7)(x+3) = 0

<u>x-7 = 0</u>

x = 7

<u>x+3 = 0</u>

x = -3

Zeros are x=7 and x= -3.

You might be interested in
Need help with this asap!
My name is Ann [436]

Answer:

Step-by-step explanation:

1 )  2 + 7t                        [ there are no like terms , so no further simplifying ]

2) 6r + ( - 16 r )

   =  6 r - 16 r                 [ both are like terms ]

   = - 10 r

3) (3x + 2 ) + ( 2x - 4 )

   = 3x + 2 + 2x - 4

   = 3x + 2x - 4 + 2               [ arranging like terms together ]

   = 5x - 2

4) (8 n² - 3 n + 6 ) + ( n - 2 )

   = 8n² - 3n  + 6 + n - 2

   = 8n² - 3n + n + 6 - 2             [ bringing like terms together ]

   = 8n² - 2n + 4

6 0
3 years ago
Read 2 more answers
Helen went with her mother to a fabric Sale. on the sale table, fabric was marked 25% off. The regular price of a certain bolt o
Naddika [18.5K]
B I am sorry if I am wrong
5 0
3 years ago
Read 2 more answers
Write percent as a fraction or in simplest form of 37.5​%
docker41 [41]
37.5% is equivalent to a fractional form. You get this by putting 37.5 over 100 since per cent means per one-hundred. This gives us
                                             37.5% = 37.5/100 = 375/1000 = 3/8
The simplest form is 3/8, therefore the answer to your question is 3/8.
4 0
3 years ago
Read 2 more answers
Using 3-5 sentences explain why you agree or disagree with cloning endangered species.
DanielleElmas [232]

Answer:

It depends if you agree or disagree

Step-by-step explanation:

Agree= it'll help the society bring back endangered animals to prevent them becoming excinct or even bring back extinct ones that have gone extinct over the years

Disagree = it won't be as accurate and can harm still living species, it can also lead to more killing of the animals for their fur/teeth, it'll also be difficult to find surrogate mother animals

5 0
3 years ago
Help plz ASAP I need help
lianna [129]

Answer:

1. Observation

2. Hypothesis

3.conclusion

4.experiment

5.problem

6. results

7.inference

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Someone pls help...<br> I'm terrified I'm gonna fail and this test is literally my life...
    15·1 answer
  • 2.
    12·1 answer
  • A picture frame is shaped like a rectangle whose perimeter is 196 cm. The length is 6 times long as the width
    10·1 answer
  • In a class of 24 students, 25 percent of them failed a test. How many students failed the test?
    6·1 answer
  • Find the cube root of x^54.
    13·1 answer
  • HELP QUICK!! 20 POINTS AND BRAINLIEST FOR CORRECT ANSWER!! In circle O, what is the m∠CAT?
    8·2 answers
  • Find the value of each variable. If your answer is not an integer, write it in simplest radical form with the denominator ration
    13·1 answer
  • It costs $0.50 to download an individual song and $4 to download an album. Jada has $15 to spend downloading music.
    10·2 answers
  • 40 percent of students survey said that they are night owls . If 300 students said that they are night owls how many students we
    14·1 answer
  • How do I put this into standard form??<br> .215(x+1.862)(x-2.862)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!