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
alexdok [17]
3 years ago
9

F(z) = (z - 5)(2x + 7) (73 = 3) has zeros at x = -3.5, x=3/7 , x=5 What is the sign of f on the interval 3/7 < x <5?

Mathematics
1 answer:
Gwar [14]3 years ago
3 0
<h3>Answer:     Negative</h3>

======================================================

Explanation:

3/7 = 0.42857 approximately

Pick a number between that value and 5, not including either endpoint. Let's say we pick x = 2

Plug x = 2 into the f(x) function

f(x) = (x - 5)(2x + 7)(7x-3)

f(2) = (2 - 5)(2*2 + 7)(7*2-3)

f(2) = (2 - 5)(4 + 7)(14-3)

f(2) = (-3)(11)(11)

f(2) = -363

The actual result doesn't matter. All we're after is whether the result is positive or negative. We see the result is negative. This means f(x) is negative when 3/7 < x < 5. The f(x) curve is below the x axis on this interval.

You might be interested in
Find the surface area!<br> Thank you!!
Evgen [1.6K]

Answer:

SA= 720 m^2

Step-by-step explanation:

x=\sqrt{5^2+12^2}=13m

AS=2*1/2*12+12*22+5*22+13*22

= 60+264+110+13*22

AS= 720m^2

⋆┈┈。゚❃ུ۪ ❀ུ۪ ❁ུ۪ ❃ུ۪ ❀ུ۪ ゚。┈┈⋆

<u>hope it helps...</u>

<u>have a great day!!</u>

6 0
3 years ago
Read 2 more answers
3. (07.04)
Naddik [55]

Answer:

The probability  that an applicant does not get a job if he or she has an interview is 20%.

Step-by-step explanation:

  • If the applicant has been interviewed, then she/he belongs to the group of 20 people that had an interview.
  • 16 of the 20 people who were interviewed were offered a job, which means that 4 of the 20 people interviewed were not offered a job.
  • Then, 4/20= 20% of the people who were intervied did not get a job, which means that the <u>probability that an applicant does not get a job if he/she were interviewed is 20%</u>.
  • Pat attention: this probability results from analysing the probability of getting a job once you have had an interview (this condition restricts our attention to the group of 20 people who had an interview, and not to the hole group of 500 people who did apply for the job).
5 0
3 years ago
Please help me with this question... I'm confused if the answer is "None of these" OR "Space"...
Scorpion4ik [409]
None of this because you can't answer 8+ 9 or with can't answer 56 <89
8 0
3 years ago
What can be multiplied to get 5 and added to get 4
bonufazy [111]
It's not possible nothing but 1 times 5 is the only thing that multiplies to 5 and 1+5 doesn't equal 4
7 0
3 years ago
Convert: 4 quarts (dry) to liters.<br> a. 0.4406<br> b. 4.406<br> c. 44.06<br> d. 440.6
kipiarov [429]
1 dry quart=1.10 

1.10 x 4= 4.4 

Final answer: B.  
4 0
3 years ago
Other questions:
  • What is the maximum number of possible extreme values for the function f(x)=x^4+x^3-7x^2-x+6
    8·2 answers
  • You want to buy a new sports car 3 years from now, and you plan to save $6,200 per year, beginning one year from today. you will
    7·1 answer
  • Question in attachment
    7·1 answer
  • Csctheta x tantheta= sectheta
    7·1 answer
  • Simple math
    11·1 answer
  • peter went to a store. he bought 5.20 Ibs. of jelly beans and cherries. if 3.24 Ibs. we're jelly beans, how many pounds were che
    9·2 answers
  • A function is shown in the table below. If included in the table, which ordered pair would result in a relation that is no longe
    6·1 answer
  • How to do this plz tell​
    5·2 answers
  • Trigonometry PLEASE HELP
    5·1 answer
  • Ray went on a 792-mile biking trip. He rode his bike 6 hours each day at an average rate of 12 miles per hour How many days did
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!