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
Korolek [52]
3 years ago
14

The height h, in feet, of a ball that is released 4 feet above the ground with an initial velocity of 80 feet per second is a fu

nction of the time t, in seconds, the ball is in the air and is given by
h(t)=-16t^2+80t+4, 0 < t < 5.04

a. Find the height of the ball above the ground 2 seconds after it is released.

b. Find the height of the ball above the ground 4 seconds after it is released.

Please show work!
Mathematics
2 answers:
gulaghasi [49]3 years ago
4 0

Answer with Step-by-step explanation:

The height of the ball from the ground as a function of time is given by

h(t)=-16t^2+80t+4

The height of the ball at any instant of time can be found by putting the value of time 't' in the above relation as

Part a)

Height of ball after 2 seconds it is released is

h(2)=-16\times 2^2+80\times 2+4=100feet

Part b)

Height of ball after 4 seconds it is released is

h(4)=-16\times 4^2+80\times 4+4=68feet

Elza [17]3 years ago
3 0

Answer:

Part a)

Height of ball after 2 seconds it is released is

h(2)=-16\times 2^2+80\times 2+4=100feet

Part b)

Height of ball after 4 seconds it is released is

h(4)=-16\times 4^2+80\times 4+4=68feet

Step-by-step explanation:

You might be interested in
The perimeter of the rectangle below is 68 cm. The perimeter of the triangle is 60 cm. Find the length of the hypotenuse of the
Inessa05 [86]

The right triangle is assumed to be inscribed in the rectangle, such that

hypotenuse is the diagonal of the rectangle.

  • The length of the hypotenuse of the triangle is <u>26 cm</u>.

Reasons:

Let <em>x</em> and<em> </em><em>y</em> represent the length of the sides of the rectangle

Whereby the base and height of the right triangle are the same as the

length and width of the rectangle, we have;

Perimeter of the rectangle = 2·x + 2·y = 68

Therefore;

\displaystyle x + y = \frac{68}{2} = 34

x + y = 34

The base of the right triangle = x

The height of the right triangle = y

By Pythagoras's theorem, the length of the hypotenuse side = √(x² + y²)

Therefore; Perimeter of the right triangle = x + y + √(x² + y²) = 60

Which gives;

∴√(x² + y²) = 60 - (x + y) = 60 - 34 = 26

The length of the hypotenuse side, √(x² + y²) = <u>26 cm</u>

Learn more about Pythagoras's theorem here:

brainly.com/question/8171420

6 0
2 years ago
HELP ME NOOWW PLEASE
erma4kov [3.2K]

Answer:

b

Step-by-step explanation:

what i did is i subtract 24 to 11 equals to 13 then add 13 to 72 .

i hope this helps

6 0
3 years ago
Posting a screenshot. please help.
Alinara [238K]
X^2 + 10x + 11 = 0
x^2 + 10x = -11
x^2 + 10x + 25 = -11 + 25
(x + 5)^2 = 14 <===
x + 5 = (+-) sqrt 14
x = -5 (+-) 3.74

x = -5 + 3.74 = -1.26 <== solution
x = -5 - 3.74 = - 8.74 <== solution


7 0
3 years ago
Expand and simplify (x-2)(x-1)
mr_godi [17]

Answer:

(x - 3) x + 2

Step-by-step explanation:

1/4 (2 x - 3)^2 - 1/4

5 0
2 years ago
A cubical house can hold 4096m of air .find the height of the house​
iren2701 [21]

Answer:

16 m

Step-by-step explanation:

V = s^{3}

4096 = s^{3}

cube root of 4096 = 16

5 0
3 years ago
Other questions:
  • 2. Find angle p.<br> A) 58<br> B) 67<br> C) 90<br> D)116
    12·1 answer
  • What is the distance between the points (−4, 5) and (3, 5)?
    14·2 answers
  • Solve the system of linear equations by adding or subtracting.
    6·1 answer
  • A shipping box in the shape of a cube has an edge length of 8 inches. It can hold 8 mugs with no extra space between them. If th
    5·2 answers
  • SIZE A ranch in Wyoming is
    10·1 answer
  • What is the rational number for 1.1?
    7·1 answer
  • The teacher assigns homework after 7/10 of the lesson
    9·2 answers
  • Each of the 4 children in a family drinks 24 ounces of milk every day. how much milk do the children drink in one week (7days)
    10·2 answers
  • Consider a multiple-choice question exam consisting of 20 questions. Assume that each question has four possible choices, and on
    9·1 answer
  • Solve for y in this equation <br> a=x + y/2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!