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
Norma-Jean [14]
2 years ago
9

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by th

e given equation. Using this equation, find the time that the rocket will hit the ground, to the nearest 100th of second. -16x^2+129x+119
Mathematics
1 answer:
Iteru [2.4K]2 years ago
8 0

Answer:

8.90 seconds

Step-by-step explanation:

When the rocket hits the ground, its height ( <em>y</em> ) will be zero. This means we can write the equation as:

  • 0 = -16x²+129x+119

So we need to <u>solve that equation</u>:

  • a = -16
  • b = 129
  • c = 119
  • x = \frac{-b\frac{+}{-}\sqrt{b^2-4ac}  }{2a}

x₁ = -0.84

x₂ = 8.90

We discard x₁, as it is negative.

So the answer is x₂, 8.90 seconds.

You might be interested in
Create a table and graph the equation y =2x-2
soldi70 [24.7K]

Table:

x  0,1

y  -2,0

Graph is the attached image.

7 0
3 years ago
Which is closest to the distance between the two points on the graph?
SVETLANKA909090 [29]

Answer:

25

Step-by-step explanation:

6 0
3 years ago
Which property does the equation illustrate?<br> 0 +-b= -b?
konstantin123 [22]

Answer:

The property the equation illustrates would be the zero property of addition.

Step-by-step explanation:

The additive property of zero states that when you have any number and add zero to it, your answer will always equal the original number.

8 0
3 years ago
Find the 52nd term for the following sequence. 16,6,-4,-14....
nikklg [1K]
I think it’s D, sorry if I’m wrong.
8 0
3 years ago
The diameter of a circle 8 inches whats is the area?
pshichka [43]

Answer:

25.12inch^2

Step-by-step explanation:

Area= pi r^2 = 3.14 x 8 =25.12inch^2

6 0
3 years ago
Read 2 more answers
Other questions:
  • Whats the slope of (5,4) and (7,8)​
    14·2 answers
  • Solve the system by the substitution method -4x + 3y = -7 y = 2x - 5
    15·1 answer
  • Melissa’s family is driving out of state to her grandmother’s house. They know that it takes 20 gallons of gas to get there, and
    9·1 answer
  • Solve the system using substitution<br> 8x+9y=15<br> 5x-2y=17
    8·1 answer
  • 852 pounds of grapes were packed equally into 3 boxes for shipping How many pounds were there in 2 boxes
    6·2 answers
  • Rosalyn worked 44 hr one week and earned a ​$989 paycheck. she earnsnbsptime and a half ​(1.5 times her regular hourly​ wage) fo
    8·1 answer
  • Let v = 9.<br><br> What is the value of r in the equation r = 3 × v + 13?
    6·1 answer
  • This composite figure is made up of three simpler shapes. What is the area of
    8·2 answers
  • A rectangular piece of card has a perimeter of 40cm and width of 8cm.
    12·1 answer
  • What are the Oder of operations
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!