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
Mariulka [41]
3 years ago
11

A ball is launched upward from the ground with an initial velocity of 20 ft/s. The height of the ball at time t is represented b

y the function h(t). h(t)=-16t^2+20t, where t is measured in seconds and h(t) is measured in feet. drag the values to the lines to complete each sentence.
1. The ball reaches its maximum height when t is ____ seconds.

2. The maximum height of the ball is ____ feet.

3. The balls hits the ground when t is ____ seconds.


OPTIONS: 0.4 0.625 0.8 1.25 5.44 6.25 12.5 25
Mathematics
1 answer:
Anastaziya [24]3 years ago
8 0

Answer:

1.-t₁  =  0,625 s

2.-h(max)  =  6,25 f

3.-t = 1,25 s

Step-by-step explanation:

V₀  =  20 f/s

h(t)  =  - 16*t² + 20*t

h(max)  =  ??

h´(t)  = - 32*t + 20

h(max) will occurs when  V = 0   dh/dt  = 0  then

- 32*t  + 20  = 0

- 32*t  =  -20

t  =  20/32

t₁  =  0,625 s

h(max) = h(0,625)    =  - 16*(0,625)² + 20*0,625

h(max)  =  - 6,25  +  12,5

h(max)  =  6,25 f

c) The ball will hit the ground

t = 2*t₁

t  = 2*0,625

t = 1,25 s

You might be interested in
Plz help i need to do this for my exam plzzz help
Bingel [31]

Answer:

x=18

Step-by-step explanation:

10x-4+x-14=180 ( the sum of straight angle=180)

11x-18=180

11x=180+18

11x=198

x=198/11

<h2>x=18</h2>

6 0
3 years ago
Please explain your answer.
Vadim26 [7]

Answer:

12

Step-by-step explanation:

it 12

7 0
3 years ago
How would you write 8^5 as a multiplication expression? A. 8 × 5 B. 8 × 8 × 8 × 8 × 8 C. 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5
Neporo4naja [7]

\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}

<u>if </u><u>we </u><u>ever </u><u>face </u><u>a </u><u>number </u><u>written </u><u>in </u><u>the </u><u>form </u><u>of </u>\underline{x^{n}}<u>where </u><u>x </u><u>denotes </u><u>the </u><u>base </u><u>and </u><u>n </u><u>denotes </u><u>the </u><u>exponent</u><u> </u><u>or </u><u>power </u><u>,</u><u> </u><u>we </u><u>can </u><u>expand </u><u>it </u><u>in </u><u>the </u><u>following</u><u> </u><u>way </u><u>-</u>

x^{n} = x \times x \times x \times.... x ( upto\: " n " \: times )

therefore ,

8 {}^{5}  = 8 \times 8 \times 8 \times 8 \times 8

option ( B )

hope helpful -,-

4 0
2 years ago
Read 2 more answers
Which statement is not always true?
Ede4ka [16]

Answer:

its 2

Step-by-step explanation:

for a fact the product of two rational numbers is rational in that statement is always true

3 0
3 years ago
Algebra question(s), please help!!!!
Angelina_Jolie [31]

Answer:

For part A

10.08x=y

Step-by-step explanation:

252/25=10.08

x=number of hours=25

y=how much earned=252

10.08(25)=252

3 0
3 years ago
Other questions:
  • The population of two cities of 660000 people. If the population of the first city is equal to 32% of the population of the seco
    14·1 answer
  • identify the independent and dependent variables of A dance academy charges $20 to use the facility and $25 per hour of instruct
    8·1 answer
  • Find the missing length indicated
    9·1 answer
  • A random sample of CO2 levels in a school has a sample mean of x¯=598.4 ppm and sample standard deviation of s=86.7 ppm. Use the
    12·1 answer
  • Plz help me it’s a little difficult
    7·1 answer
  • Can someone help me with this?​
    12·1 answer
  • PLS HELP ME WITH THISSSSSSSSSSS
    8·1 answer
  • A restaurant owner has found that 80% of her customers return to the restaurant within two weeks. She wants to create a tool tha
    13·2 answers
  • Help please, i'll give the crown thing if I can
    14·1 answer
  • Determine all missing angles below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!