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
emmainna [20.7K]
2 years ago
6

The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe

re t is in seconds. How long will it take to he penny to strike the ground.
Mathematics
1 answer:
mr Goodwill [35]2 years ago
8 0

6 sec can take penny to strike the ground.

Solution:

Given data:

H_0=288 feet

V_0=48 feet

h(t)=288+48t-16t^2

Re-arrange the terms from greatest degree to smallest degree.

h(t)=-16t^2+48t+288

We can solve it by applying quadratic formula,

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}

Here a = –16, b = 48, c = 288

$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}

$t=\frac{-48\pm \sqrt{2304+18432}}{-32}

$t=\frac{-48\pm \sqrt{20736}}{-32}

$t=\frac{-48\pm144}{-32}

Now, write find two t's using plus and minus operation.

$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}

$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}

t = –3 (or)   t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

You might be interested in
Olivia cashed a check
N76 [4]
Cool I guess hehehehehe
6 0
2 years ago
A coffee seller makes a salary of $3,500 per month plus a $12 commission for every $100 of coffee he sells. A case of coffee cos
Bond [772]

Answer:

50

Step-by-step explanation:

because 3,650-3,500=150 and then 150/12=12.5x4=50

4 0
2 years ago
Which is the missing step in the proof below? Given: ABCD IS A PARALLELOGRAM
OlgaM077 [116]

Answer:

no picture

Step-by-step explanation:

3 0
3 years ago
18. Two planes left an airport at the same time. One flew north at a set speed and the other
Andre45 [30]

Answer: plane A = 333.33mph

Plane B = 500mph

Step-by-step explanation:

Given data:

Distance between the two planes = 2400miles.

Plane A flew North

Plane B flew south

Solution:

Let v represent plane A.

Let 2v represent plane B.

Distance between the two plane

v + 1.5* v = 3*v

7.5v = 2500miles

v = 333.33mph

Plane B has one and half times the speed of plane A

= 1.5 * 333.33

= 500mph

4 0
2 years ago
A restaurant has 40 tables in its dining room. It takes the
SVETLANKA909090 [29]
40 tables, 4 tables per 12 minutes so 40/4*12 which would be 120 minutes.

Hope this helps!
7 0
2 years ago
Other questions:
  • How do you do this and please do the working and tell me if you can.(optional)
    8·1 answer
  • Grandma usually puts 6 cookies into each of 13 containers when she cooks a single batch. However, she now only has 6 containers.
    6·1 answer
  • X to the power of 2+ 2X plus 3X to the power of 2+ 4X subtract 2X to the power of 2+ X
    6·1 answer
  • What is 1.2 in expanded form
    7·1 answer
  • Dr.sox paid $1580 for a new computer system. She also paid 6.5% sales tax. How much was total cost?
    8·1 answer
  • Find the solution x/6 = 15 ( type your a answer plz?)
    5·2 answers
  • Please help, will mark Brainly and if you need help with anything I’ll help with any work you send
    14·1 answer
  • A small ior shows the data is
    9·1 answer
  • ✓2(✓3+✓5)-√6-✓10<br>rationalize​
    12·2 answers
  • What is the approximate value for<br> 683/22<br> A. 20<br> B. 21<br> C. 25<br> D. 31
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!