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
topjm [15]
3 years ago
5

Please help me out guys. The photo will show you what to do. 50 points cause I need it done fast

Mathematics
1 answer:
Nonamiya [84]3 years ago
6 0

Answer:

a) starting height: 5.5 ft

b) hang time: 5.562 seconds

c) maximum height: 126.5 ft

d) time to maximum height: 2.75 seconds

Step-by-step explanation:

a) The starting height is the height at t=0.

h(0) = -16·0 +88·0 +5.5

h(0) = 5.5

The starting height is 5.5 feet.

__

b) The ball is in the air between t=0 and the non-zero time when h(t) = 0. We can find the latter by solving ...

-16t^2 + 8t +5.5 = 0

t^2 -(11/2)t = 5.5/16 . . . . . subtract 5.5, then divide by -16

t^2 -(11/2)t +(11/4)^2 = (5.5/16) +(11/4)^2 . . . . complete the square

(t -11/4)^2 = 126.5/16 . . . . . . . . . . . . . . . . . . . . call this [eq1] for later use

t -11/4 = √7.90625

t = 2.75 +√7.90625 ≈ 5.562

The ball will be in the air about 5.562 seconds.

__

c) If we multiply [eq1] above by -16 and add the constant on the right, we get the vertex form of the height equation:

h(t) = -16(t -11/4) +126.5

The vertex at (2.75, 126.5) tells us ...

The maximum height of the ball is 126.5 feet.

__

d) That same vertex point tells us ...

The maximum height will be reached at t = 2.75 seconds.

_____

If you really need answers fast, a graphing calculator can give them to you in very short order (less than a minute).

You might be interested in
2 fractions between 3/5 and 4/5
Tasya [4]
Convert the fractions to decimals:

3/5=0.6
4/5=0.8

You have to find 2 fractions between these 2 numbers. You could pick anything.

7/10= 0.7 = less than 0.8 but greater than 0.6

75/100=0.75 = less than 0.8 but greater than 0.6

Hope this helps

3 0
3 years ago
Find the surface area of the cone to the nearest tenth.
vfiekz [6]
Surface area = base area + side area

= pi * 7^2 + pi * 7 * 27 = 238pi = 747.7 cm^2
7 0
3 years ago
Read 2 more answers
A motorboat takes 3 hours to travel 108 going upstream. The return trip takes 2 hours going downstream. What is the rate of the
Natalija [7]
Let s and c be the rate of the boat in still water and the rate of the current, respectively. Then:
108/s-c=3
108/s+c=2
3s-3c=108
2s+2c=108
Solve for s and c
☺☺☺☺
4 0
2 years ago
I'm stuck- lol. I'll give brainliest to the first correct answer! :D
polet [3.4K]

Answer:

Its 4:)

Step-by-step explanation:

8 0
3 years ago
HELP PLEASEEE ASAP ! THANK YOU :)
Salsk061 [2.6K]

Answer:

f(x) = 2x³ - 6x² - 48x + 24

relative minimum: (4,-136)

relative maximum: (-2,80)

answer is the second option

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the length of the third side of the window frame ??
    5·2 answers
  • The units of the subway map below are in miles. Suppose the routes between stations are straight. Find the approximate distance
    6·1 answer
  • |z−7|−|z−9| , if z&lt;7?<br> Write without absolute value
    5·1 answer
  • Does anyone know the answer?
    10·1 answer
  • Which of the following could be a solid of revolution?
    14·1 answer
  • A band sells tickets to a concert cost either $15 for adults or $10 for students. A total of 150 tickets are sold. If the band m
    15·2 answers
  • Solve the system of equations given below. (Please--help..)
    6·1 answer
  • Answer the following. Solve for X
    7·2 answers
  • Find the volume <br><br> A. 150 cm3<br><br> B. 180 cm3<br><br> C. 90 cm3<br><br> D. 90 cm2
    13·1 answer
  • Look at this square. Find the value of a.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!