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
labwork [276]
3 years ago
7

An object is thrown upward from the top of an 80​-foot building with an initial velocity of 64 feet per second. The height h of

the object after t seconds is given by the quadratic equation h equals negative 16 t squared plus 64 t plus 80. When will the object hit the​ ground?
Mathematics
1 answer:
antoniya [11.8K]3 years ago
4 0

Answer:

Step-by-step explanation:

Solving:

Use the formula h = -16t^2 +vt +s

What we know:

v = 64 feet per second (initial velocity)

s = 80 foot (initial height)

h = ?

t ?

h = -16t^2 + 64t + 80

I know I should be asking in detail, are you allowed to use the quadratic formula or solve it by factoring it out?

You might be interested in
I NEED HELP NOW!!!<br><br> Which expression is equivalent to 7(k^2) where k is an even number?
xz_007 [3.2K]

Ans28^{k}

Step-by-step explanation:

4 0
3 years ago
The set of life spans of an appliance is normally distributed with a mean y = 48 months and a standard deviation or
Kamila [148]

Answer:

The set of life spans of an appliance is normally distributed with a mean µ= 48 months and a standard deviation σ= 8 months. ... Thanh finds that his grade on the test has a z-score of -2.5. ... are normally distributed, and the probability that the city gets more than 43.2 inches of rain in a year is given by P(z≥1.5)=0.0668.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
i've been studying this secret message for hours but I cant seem to break the code. what it really needs is ______. A. a pretty
marshall27 [118]
The correct answer to this complex equation of cheese is D
4 0
4 years ago
Write an equation of an ellipse in standard form with the center at the origin and a height of 20 ft. and width of 28 ft.
Tamiku [17]
The standard equation of an ellipse is:

(x/h)^2+(y/k)^2=1  where h and k are the radii of the x and y axis...so

(x/14)^2+(y/10)^2=1 or if you prefer

x^2/196+y^2/100=1
5 0
4 years ago
Read 2 more answers
PLEASE HELP ASAP A point at (3, 2) is rotated 180° clockwise about the origin.
Sloan [31]
(-3,-2)
You just change the signs
5 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the approximate value of the 82nd percentile.<br><br> Enter an exact value.
    14·1 answer
  • I NEED HELP LIKE NOW PLS!<br> I'll give you brainliest answer if you can help me ((:
    8·1 answer
  • Sonja went hiking for 4 hours. For how many minutes did she go hike
    10·2 answers
  • How to find the reference angle of -11pi/3 ? 
    8·2 answers
  • What’s the measure of angle XYZ?
    11·2 answers
  • PLEASE HELP I WILL GIVE BRANLIEST
    9·2 answers
  • 5 4 ​ start fraction, 4, divided by, 5, end fraction of their popcorn with butter. The remaining 35.235.235, point, 2 ounces was
    11·1 answer
  • Simplify<br><br> 30[2 x (16/8)]
    14·1 answer
  • Brainliest for the correct answer
    8·2 answers
  • How do i get a Brainliest answer
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!