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
Margarita [4]
3 years ago
6

A ball is thrown from a height of 80 feet with an initial downward velocity of 4/fts. The ball's height h (in feet) after t seco

nds is given by the following.
h=80-4t-16t^2
How long after the ball is thrown does it hit the ground? Round your answer(s) to the nearest hundredth.
Mathematics
1 answer:
aliya0001 [1]3 years ago
5 0

Answer:

2.11 sec

Step-by-step explanation:

Given that the ball is thrown from a height of 80 feet

it follows the equation

h = 80-4t-16t^2

when the ball hits the ground the height if the ball is equal to 0

16t^2+4t-80=0

t=\frac{-4+\sqrt{4^2-4\times 16\times(-80)} }{2\times 16}

t=\frac{-4+71.66}{32}

t=2.11

You might be interested in
14. What is the vertex of y=-3x2 + 6x +15?
Flura [38]

Answer:

y=6x+21

Step-by-step explanation:

simply 3x2+6x+15

5 0
3 years ago
The expression 0.6+0.08n can be used to find the cost, in dollars, of making n photocopies. How much will clayton have to pay to
atroni [7]

Answer:

26.2

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
I need help to solve please
antiseptic1488 [7]

Answer:

<h2><em><u>x = 52</u></em></h2>

Step-by-step explanation:

<em><u>Known:</u></em>

What to find = x

Exterior angle = 142

Right angle = 90

<em><u>Unknown:</u></em>

what unknown value is = ?

Interior angle = ?

<em><u>1. Find the angle of the interior angles.</u></em>

180 - 142 = 38

<em><u>2. Add the two known angles</u></em>

38 + 90 = 128

<em><u>3. Subtract from 180</u></em>

180 - 128 = 52

<h2><em><u>x = 52 is the answer.</u></em></h2>

Hope this helped,

Kavitha Banarjee

6 0
3 years ago
If y = -6cosx, what is the amplitude?
aniked [119]

 

\displaystyle\bf\\y=-6cos\,x\\\\\textbf{is equivalent to:}\\\\y=6cos(x+\pi)\\\\\textbf{where 6 is the maximum value or amplitude}\\\\\implies~~~\boxed{\bf~amplitude=6}

 

8 0
3 years ago
What is the measure of RCD in the figure below?
kompoz [17]

Ray CD cuts angle PCR in half.

PCD = 35 degrees.

So, RCD = PCD or 35 degrees.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Wyatt is going to a carnival that has games and rides. Each game costs $1.25 and each ride costs $2.75. Wyatt spent $20.25 altog
    10·1 answer
  • The perimeter of the triangle is 15.7 inches, so the equation to solve is 2a + b = 15.7.
    7·1 answer
  • In a 4x4x4 cube, the face is painted red, then divided into 64 1x1x1 cubes. How many of the 1x1x1 cubes are painted 1 or 2 faces
    12·2 answers
  • You were just hired as an apprentice architect. Your starting salary is $68,000 annually. What is your semimonthly salary
    10·1 answer
  • Find the midpoint of the segment with the following endpoints.<br> (8, -3) and (2, -10)
    5·1 answer
  • Find the value of x that makes A || B.
    8·1 answer
  • A factory makes 1554 units in 14 days with the help of 20 workers. If 2 workers go on leave, how many units can be produced, if
    11·1 answer
  • The coefficient of x in the expression of(x+3) (x-1) is​
    13·1 answer
  • Octavia buys a pair of jeans for $20.50 plus 8% tax.
    5·2 answers
  • Solve: √x=25. Explain how you found your answer. Explain how to check your work.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!