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
Tanzania [10]
3 years ago
6

An observation deck extends 311 feet out above a valley. The deck sits 261 feet above the valley floor. If an object is dropped

from the observation​ deck, its height h in​ feet, after t​ seconds, is given by h=-16t²+261. How long will it take for the object to be 5 feet above the valley​ floor?
Mathematics
2 answers:
Andreas93 [3]3 years ago
6 0

Answer:

4.12

Step-by-step explanation:

its 4.12 mark me brainiless

mamaluj [8]3 years ago
3 0

Answer:

  • 4 seconds

Step-by-step explanation:

<u>Find the value of t in the following equation:</u>

  • -16t² + 261 = 5
  • -16t² = - 255
  • t² = 255/16
  • t = √255/4 ≈ 4 seconds
You might be interested in
Someone help me please
Black_prince [1.1K]

Answer:

C.

Step-by-step explanation:

Line CD has a slope of -5/3 and the negative reciprocal of 3/5. The slope for the line given is 3/5 so the slopes are right. Then look at the y-intercept of the line given: (0,-2)     Go up 3 and over 5 and you can see it pass through the line CD making C the answer.

5 0
3 years ago
To show that polygon ABCDE is congruent to polygon FGHIJ, a must be used to make the two polygons coincide. A sequence of two tr
Sati [7]
Hello.

The minimum number of rigid transformations required to show that polygon ABCDE is congruent to polygon FGHIJ is 2 (translation and rotation). 

A rotation translation must be used to make the two polygons coincide. 

A sequence of transformations of polygon ABCDE such that ABCDE does not coincide with polygon FGHIJ is a translation 2 units down and a 90° counterclockwise rotation about point D 

Have a nice day
7 0
3 years ago
Read 2 more answers
I WILL GIVE U BRAINLIEST AND THANKS AND 5 STARS
Effectus [21]

Answer:

I agree with Noah's Method because following PEMDAS you have to do exponents first. 10^3 is 1000 and then you can add the 20. Jada's method is incorrect because you cannot add the two together.

6 0
2 years ago
Read the problem. Baker School's hockey games are 60 minutes long. Nico played for 30 minutes of the last game. What percent of
ValentinkaMS [17]

Answer:

50%

Step-by-step explanation:

I dont know how else to put it you didnt show the models though :(

8 0
3 years ago
Read 2 more answers
What number is 35% of 600
emmainna [20.7K]
35% of 600 = .35 x 600 = 210

4 0
3 years ago
Other questions:
  • How do you solve 7+1/4r=-17
    9·2 answers
  • Add. [12 − 6] [−2 14] (matrix format)
    15·1 answer
  • Which of the following is an irrational number?4/3 , ^24, ^81, -4.07
    15·1 answer
  • Find -x + 10 subtracted from 0
    11·2 answers
  • What does x equal if the circumference of a circle equals 113.04
    7·1 answer
  • Plz help me solve this question ASAP!<br><br> R=200/(1-(1.011)^-20/0.011)
    7·1 answer
  • State the range and the domain of this graph, is if a relation function why or why not?
    13·2 answers
  • Just carpet has eight different quality grades of carpeting. Three types are being selected for a corporate test on durability.
    5·1 answer
  • How to do this question
    8·1 answer
  • HELP ME ANSWER THIS PLEASE
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!