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
katrin2010 [14]
3 years ago
13

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 out the time at which the rocket will reach its max, to the nearest 100th of a second. y=-16x^2+218x+75
Mathematics
1 answer:
stealth61 [152]3 years ago
8 0

Answer:

6.81s

Step-by-step explanation:

First you must know that the velocity of the body is zero at the maximum height.

v =dy/dx

v= -32x+218

Since v = 0

-32x+218 =0

32x =218

x= 218/32

x = 6.81s

Hence the rocket reaches its maximum height after 6.81s

You might be interested in
If the variance is 81 grams, what is the standard deviation four times?
Svetlanka [38]

Answer:

102

Step-by-step explanation:

i guess

6 0
2 years ago
Geometry questions, please help!! Will give 98 points to whoever provides the correct answers!!
loris [4]
6 √3. Short leg is half the hypotenuse is 6 so x = long leg so x= short leg times √3
5 0
3 years ago
Read 2 more answers
With reference to the figure, sin X equals?<br> 1.) 0.250<br> 2.)0.447<br> 3.)0.894<br> 4.)1
Flura [38]

Answer:

3.) 0.894

Step-by-step explanation:

✔️First, find BD using Pythagorean Theorem:

BD² = BC² - DC²

BC = 17.89

DC = 16

Plug in the values

BD² = 17.89² - 16²

BD² = 64.0521

BD = √64.0521

BD = 8.0 (nearest tenth)

✔️Next, find AD using the right triangle altitude theorem:

BD = √(AD*DC)

Plug in the values into the equation

8 = √(AD*16)

Square both sides

8² = AD*16

64 = AD*16

Divide both sides by 16

4 = AD

AD = 4

✔️Find AB using Pythagorean Theorem:

AB = √(BD² + AD²)

AB = √(8² + 4²)

AB = √(64 + 16)

AB = √(80)

AB = 8.9 (nearest tenth)

✔️Find sin x using trigonometric ratio formula:

Reference angle = x

Opposite side = BD = 8

Hypotenuse = AB = 8.944

Thus:

sin(x) = \frac{opp}{hyp} = \frac{8}{8.944} = 0.894 (nearest thousandth)

6 0
3 years ago
20x+32y=0 <br> -50x-80y=0
german

Answer:

dont know what you need

Step-by-step explanation:

explain what you need

4 0
3 years ago
a chocolate company selects 800 random packages to check their weight. It finds that 12 packages have an incorrect weight. How m
Lerok [7]

Answer:

1.5% of 4000 or 60

Step-by-step explanation:

5 0
2 years ago
Other questions:
  • YOU GET ALL MY POINTS IF YOU ANSWER THIS (please help) geometry
    6·1 answer
  • Given the area of a square is 225 square feet, what is the length of each side
    8·1 answer
  • Hey anyone know the answer?
    13·2 answers
  • Math heeeeellllloppp
    8·1 answer
  • Which number is the largest ? <br> -0.65, -0.622, -5/8
    14·2 answers
  • Jackson invested $8,800 in an account paying an interest rate of 7% compounded
    5·1 answer
  • 19) It will cost $12.50 per person to make dinner. Write an
    9·1 answer
  • The school that Stephen goes to is selling tickets to a choral performance on the first day of tickets sells the school so three
    12·1 answer
  • Answer soon :) for plato
    12·1 answer
  • Kenzie makes quilts from blue and purple pieces of fabric. The diagram shows the ratio of blue pieces to
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!