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
Tems11 [23]
3 years ago
14

A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation

Mathematics
1 answer:
Alexxx [7]3 years ago
7 0
Ok

y=-0.04x^2+8.3x+4.3
when the rocket reaches the ground (when height=0, ie when y=0), then the rocket will land, find the x coordinate

set y=0
0=-0.04x^2+8.3x+4.3
use quadratic formula
if you have ax^2+bx+c=0, then
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}
a=-0.04
b=8.3
c=4.3
x=\frac{-8.3+/- \sqrt{8.3^{2}-4(-0.04)(8.3)} }{2(-0.04)}
x=208.017 or -0.516785
xrepresents horizontal distance
you cannot have a negative horizontal distance unless you fired and theh wind blew it backwards
therefor x=280.017 is the answer
208.02 m


You might be interested in
The relationship between V, the value of his car, in dollars, and t, the elapsed time, in years, since he
Sergio [31]

Answer:

t = -24*log(2/3)

Step-by-step explanation:

The expression is:

V = 22,500*10^(-t/12)

Replacing with V = 10,000 and isolating t, we get:

10,000 = 22,500*10^(-t/12)

10,000/22,500 = 10^(-t/12)

4/9 = 10^(-t/12)

(2/3)² = 10^(-t/12)

2*log(2/3) = -t/12

-12*2*log(2/3) = t

t = -24*log(2/3)

6 0
3 years ago
Read 2 more answers
The bag of rice measures between two tens
sergeinik [125]
This is not a Question 

8 0
3 years ago
Read 2 more answers
Is 216 more than 30% of 720​
Natali [406]

Answer:

No, it is equal

Step-by-step explanation:

30% of 720 is 216.

5 0
3 years ago
Read 2 more answers
Marie buys 16 bags of potting soil that comes in 5 - 8 pound bags. If Marie's father calls and he needs 13 pounds of potting soi
vesna_86 [32]
One bag of 5 pounds and one bag of 8 pounds
4 0
3 years ago
-8x-11x what is the answer
gregori [183]

Answer:

-19x

Step-by-step explanation:

so you start with -8 and when you subtract 11 from -8 its the same as adding them but because your subtracting you'll decrease which make the answer -19x. (hopefully this made sense)

7 0
2 years ago
Other questions:
  • This year, a gram planted 400,000 corn stalks.last year, the farm planted 275,650 corn stalks how many more corn stalks did the
    14·1 answer
  • The complementary angle of 99°
    13·2 answers
  • What is the number 153 split in half
    6·2 answers
  • Jus need help with exercise 3 ONLY
    9·1 answer
  • Which of the following numbers is not in the interval (3, 9]?<br> 3.14<br> 9<br> 3<br> 7
    6·1 answer
  • A bakery used 25% more butter this month that last month. If the bakery used 240 kilograms of butter last month, how much did it
    12·2 answers
  • The perimeter of a square picture frame is 24 in. Find the lengths of each side of the frame.
    11·1 answer
  • What is 1 plus 1 in active numbers
    5·1 answer
  • 1. A buoy floats 19 yards from the eastern most point of a boat and 15 yards from the western most point of a second boat. The a
    14·1 answer
  • In the diagram, ΔGHJ ≅ ΔSTU.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!