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
klasskru [66]
3 years ago
7

The height in feet of a baseball can be modeled by the function y=-16t^2+64t where t is the time in

Mathematics
1 answer:
VikaD [51]3 years ago
3 0

Answer:

the ball reaches a height of 64 feet after 2 sec.

The ball is in the air 4 sec.

Step-by-step explanation:

The ball is following the path of a parabola.  The maximum height is at the vertex of the parabola.

Let (h, k) be the vertex.  h will be the time it takes to reach the maximum height, and k will be that height.

y = -16t^{2} + 64t

h = -b/2a = 64/(-2)(-16) = 64/32 = 2

k = -16(2)^2 + 64(2)

     -16(4) + 128

     - 64 + 128 = 64

V:  (2, 64)

So the ball reaches a height of 64 feet after 2 sec.

Let -16t^{2} + 64t = 0       (0 is the height when the balls hits the ground)

-16t(t - 4) = 0

t = 0  or t = 4

The ball is in the air 4 sec.

You might be interested in
The graph below shows the numbers of cups of kiwi juice that are mixed with different numbers of cups of lemon-lime soda to make
Leya [2.2K]

Answer:

4:1

Step-by-step explanation:

4 cups of kiwi juice for every cup of lemon lime soda

6 0
2 years ago
Read 2 more answers
You have 636.3 g of pennies and each penny weighs 3.03g. how many pennies do you have
nalin [4]
Total weight=number of pennies times weight of 1 penny
total weight/weight of 1 penny=number of pennies
636.3/3.03=210

210 pennies
8 0
3 years ago
Fifteen less than twice a number is less than or equal to -23
lutik1710 [3]
I would think the answer is -16 

but that's is what i think

5 0
3 years ago
Help! Need sober answer<br>....​
AlekseyPX

\huge{\mathbb{\tt{ANSWER↓}}}

<h3><u>1. Find the permutation of the word LOVE taken 2 letters at a time.</u></h3>

<h2><u>ANSWER</u><u> </u><u>IS</u><u> </u><u>C.12</u></h2>

<h2>--------------------------------------------------------------------------------</h2>

<h3><u>2. If 3 girls enter a jeepney in which there are 7 vacant seats, how many ways are there for them to be seated?</u></h3>

<h2><u>ANSWER</u><u> </u><u>IS</u><u> </u><u>B.210</u></h2>

<h2>--------------------------------------------------------------------------------</h2>

<h3><u>3. How many combinations can be made from the letters of the word MOTHER taken 4 at a time.</u></h3>

<h2><u>ANSWER</u><u> </u><u>IS</u><u> </u><u>A.15</u></h2>

#CarryOnLearning

#JustEnjoyTheSummer

<h3>→XxKim02xX</h3>
6 0
3 years ago
Express 1.21212121.... as a fraction
Elodia [21]
That would be 1 21/99  or  120/99 as an improper fraction.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Hosting a breakfast brunch for 25 people, you plan to serve scrambled eggs.
    8·1 answer
  • If a student from math class asked to borrow $200 and promised to repay you in 5 months, would you lend it to him?
    13·1 answer
  • Help!!!!! stuck on this
    14·1 answer
  • What do people need to earn income?<br>​
    5·1 answer
  • Two equations are shown in the picture please answer. giving brainiest
    8·1 answer
  • your job pays 8$ per hour Write a variable expression for your pay in dollars for working h hours. What is your pay if you work
    12·1 answer
  • 9
    5·1 answer
  • Distribute to simplify <br><br> 1. 4(c-2) <br><br> 2. 8(x-1)​
    10·1 answer
  • What is the difference between a relation and function? Classify each of the following as a function, or not a function. State t
    5·1 answer
  • Solve the inequaility - x/4 &lt;2
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!