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
andreyandreev [35.5K]
3 years ago
11

Determine whether the parabola y = −x2 + 15x + 8 opens up, down, left, or right.

Mathematics
1 answer:
spayn [35]3 years ago
7 0
Dy/dx=-2x+15

d2y/dx2=-2

Since the acceleration is a constant negative it has an absolute maximum value for y(x), thus it opens downward, as x decreases without bound as x approaches ±∞
You might be interested in
Given f(x)= 3x+21. A. F(4)=B. F(X)= 50, X=2. C. F(-5)=D. F(X)= -34, X=
nignag [31]

The given function is

f(x)=3x+2

A . f(4) means we have to evaluate the function when x = 4.

f(4)=3(4)+2=12+2=14<h2>Therefore, f(4) = 14.</h2>

B. f(x) = 50 means we have to evaluate the function when y = 50.-

\begin{gathered} 50=3x+2 \\ 50-2=3x \\ x=\frac{48}{3} \\ x=16 \end{gathered}<h2>Therefore, f(16) = 50.</h2>

C. f(-5) means we have to evaluate the function when x = -5.

f(-5)=3(-5)+2=-15+2=-13<h2>Therefore, f(-5) = -13.</h2>

D. f(x) = -34.

\begin{gathered} -34=3x+2 \\ -34-2=3x \\ x=\frac{-36}{3} \\ x=-12 \end{gathered}<h2>Therefore f(-12) = -34.</h2>
4 0
1 year ago
What is missing from this graph?<br><br> axis labels<br><br> a trendline<br><br> a title
andre [41]
It’s missing axis labels


Hope this helps!
7 0
2 years ago
Read 2 more answers
SOMEONE PLEASE GIVE STEP BY STEP ILL GIVE BRAINLIEST
Natalija [7]

Answer:

18.9 or 23.625

Step-by-step explanation:

8 0
3 years ago
Simplify the Ratio<br><br> 250: 550
pantera1 [17]
The answer is 11:5 ……………….
3 0
3 years ago
Read 2 more answers
Deal A is at Walmart and they are selling 50 cupcakes for $30 dollars but gives you 10% discount. Deal B is at Costco gives you
nadezda [96]

Answer:

Deal B

Step-by-step explanation:

Deal A : $ 30 *10%=3 dollars

the price for 50 cupcake is 27 dollars (54 cent for one cupcake)

Deal B: 50*50%= 25 more cupcake

75 cupcake for 30 dollars ( 40 cents per cupcake)

Deal B is better than Deal A

3 0
2 years ago
Other questions:
  • Answer to number one
    9·1 answer
  • Can somebody please help me????
    10·1 answer
  • WILL MARK U AS BRAINLIEST!!! Evaluate the following expressions given the functions below:
    7·1 answer
  • What the answer to this 5+5?
    10·2 answers
  • I need some help please help meeee!
    6·2 answers
  • HELPP PLZZZZ!!!!!!!!
    7·1 answer
  • The diameters of bolts produced by a certain machine are normally distributed with a mean of 1.20 inches and a standard deviatio
    6·1 answer
  • The table represents a function.
    14·1 answer
  • In September a clothing store had a sale where you could get 5 scarves for $28.35. In October the price was changed to 7 scarves
    9·1 answer
  • Can you guys check this???
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!