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
Andru [333]
3 years ago
10

Over what interval is the graph of f(x) = –(x + 8)2 – 1 decreasiang help

Mathematics
1 answer:
Degger [83]3 years ago
5 0
Please use " ^ " to denote exponentiation:  

<span>f(x) = –(x + 8)^2 – 1 
Find the first derivative:  f '(x) = -2(x+8)(1)
Set this = to 0:  -2(x+8) = 0
solve for x:  x = -8
Divide the number line into subintervals based upon x=-8:

(-inf, -8) and (-8, inf)

Choose a test value for x from each interval, e. g., -10 from the first interval and 20 from the second.

Subst. this test value into the derivative, shown above.

If the result is + the function is incr on that interval; if - the fn. is decr.

Questions welcome!</span>
You might be interested in
Determine the quotient of 1 and 2 over 3 divided by 4 over 5. 1 and 1 over 3 1 and 8 over 15 2 and 1 over 12 2 and 5 over 6
Molodets [167]
Use a calculator my friend.
8 0
2 years ago
Find the area of a garden with a length of 3 1/2 yards and a width of 2 2/3 yards
Dahasolnce [82]

Answer:

2.33 yards

Step-by-step explanation:

3 1/2-3.5

2/3-0.66

0.66 x 3.5 = n

7 0
2 years ago
Emily has 300 books. if frank were to double the number of books that he now owns, he would still have fewer than Emily has
Alex_Xolod [135]
This statement is false. 
If he were to double the amount that Emily has to get franks, franks would have more. 
Look :)
Emily's = 300
Frank's = 300 x 2 = 600

now...
Emily's = 300
Frank's = 600

So frank has more! NOT fewer. 

8 0
3 years ago
Read 2 more answers
What is the distance between (-3,1) and (-2,-1) in units​
Nastasia [14]

Answer:

Here is the graph I made, starting from (-3,1) to (-2,-1) it goes down 2 units and over 1 unit.

6 0
2 years ago
Subtract 7 pounds 3 ounces from 10 pounds
butalik [34]
(10 pounds) - (7 pounds 3 ounces) =
2.8125 pounds
7 0
2 years ago
Other questions:
  • 24/50 simplified lowest terms
    9·2 answers
  • 20 POINTS JUST FOR YOU IF YOU GET IT RIGHT
    9·1 answer
  • Find the product of x^2+6x-5 and -3x+2
    11·2 answers
  • From 6 cards bearing the letters a, b, c, d, e, and f, two cards are drawn. Find the probability that at least one of the cards
    9·2 answers
  • David washed all 24 windows inches house. He washed 6 windows each morning and 2 windows each afternoon. How many days did it ta
    6·1 answer
  • What’s the name of that shape?
    10·2 answers
  • If f(x)=-5squared -4 and g(x) = -3x-2find (f+g)(x)
    13·1 answer
  • You have a standard deck of 52 cards. What is the probability of drawing a king, not replacing it and then drawing a 2.
    15·1 answer
  • Help I need the answer right quick. Which one????
    5·1 answer
  • Please answer number 14. It would mean so much to me.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!