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
erma4kov [3.2K]
3 years ago
9

A volleyball reaches its maximum height of 13 feet, 3 seconds after its served. Which of the following quadratics could model th

e height of the vollyball over time after it is served. Select all that apply.
A: f(x)=2x^2+12x+5
B: f(x)=-2x^2+12x-5
C: f(x)=-2x^2-12x+5
D: f(x)=-2(x-3)^2+13
E: f(x)=-2(x+3)^2+13
Mathematics
2 answers:
Ivahew [28]3 years ago
7 0

Answer:

B: f(x)=-2x^2+12x-5

and!!!!!!

D: f(x)=-2(x-3)^2+13

Step-by-step explanation:

b and are the only ones that give you the values 13 and 3

kykrilka [37]3 years ago
3 0
If it reaches its maximum height a t=3 its velocity must be zero at t=3

dy/dx=0 at t=3

dA/dx=4x+12=24 at t=3 so this does not apply

dB/dx=-4x+12=0 at t=3 and B=13 at t=3 so B applies

dC/dx=-4x-12=-24 at t=3 so this does not apply

dD/dx=-4x-12=-24 at t=3 so this does not apply

dE/dx=-4x-12=-24 at t=3 so this does not apply

So only quadratic B: reaches a maximum height of 13 feet at 3 seconds.
You might be interested in
Jacob wants to know how many students in his school enjoy watching space travel programs on TV. He poses this question to all 20
Naddik [55]
No because he has not went to other classes
4 0
3 years ago
Read 2 more answers
Carlos walk to school on the 14th of 20 days in February which value is equivalent to the fraction of school days in February th
Lady bird [3.3K]

Answer:

\dfrac{7}{10}

Step-by-step explanation:

Given that,

Carlos walk to school on the 14th of 20 days in February.

We need to find the equivalent to the fraction of school days in February that Carlos walk to school.

Required percentage is given by :

\%=\dfrac{14}{20}\times 100\\\\=14\times 5\\\\=70\%

or

=\dfrac{7}{10}

So, the required fraction is equal to \dfrac{7}{10}.

6 0
2 years ago
Cynthia Besch wants to buy a rug for a room that is 20 ft wide and 26 ft long. She wants to leave a uniform strip of floor aroun
Alexus [3.1K]

Answer:

18 ft. wide by 24 ft. long

Step-by-step explanation:

this would leave a uniform strip of 2 ft around the rug and stay in her price range for 432 square feet of carpeting.

and 18 times 24 = 432 square feet

7 0
3 years ago
Evaluate sin^2Θ, for Θ=45°
Zielflug [23.3K]

Answer:

sin^2(45) = (√2/2)^2 = 1/2

Step-by-step explanation:

sin2x = sin2 * x = 0.909x

sin(2(45)) = sin90 = 1

Hope this helps.

3 0
3 years ago
Read 2 more answers
. (6.03) Which of the following best describes the expression 6(y + 3)? (4 points) The product of two constant factors six and t
kolezko [41]
C. The product of a constant factor of six and a factor with the sum of two terms. In this case, 6 is constant, and the sum of two terms is: y+3. Since they are products, you multiple them. Therefore C would be correct.
8 0
3 years ago
Other questions:
  • In the above figure, m∠XOV = 47° and m∠UOW = (2x + 35)°. If ∠UOW and ∠XOV are vertical angles, what is the correct equation that
    9·1 answer
  • Two thirds of a number, decreased by thirty six, is at most twenty two. Find the number.
    11·1 answer
  • The number 0.2 can be written as 2/10, so it's a rational number
    13·2 answers
  • Explain what each variable in the formula represents.<br> Will give brainlist
    8·1 answer
  • What is y= -6(x+2)(x+6)
    6·1 answer
  • How many pounds of candy worth $8 per lb. should be mixed with 100 lb. of candy worth $4 per lb. to get a mixture that can be so
    5·1 answer
  • (08.01)Jenni is surveying shoppers about their use of the new customer service center in a store. Which question in her survey i
    10·1 answer
  • Graph ƒ(x) = -3x + 7
    6·1 answer
  • The length of a rectangle is 4 meters less than twice it's width. The area of the rectangle is 70 find the demotions of the rect
    13·1 answer
  • Johnathon weight 60 pounds when he was in the 4th grade. Over the last four years, he has gained 80% of his original weight. How
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!