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
Semmy [17]
3 years ago
8

A rocket is launched into the air. The projectile motion of the rocket can be modeled using h(t) = 112t –16t2, where t is the ti

me since launch in seconds and h(t) is the height of the rocket at time t. When will the rocket be 196 feet in the air?
 
A.) after 2.0 seconds

B.) after 3.5 seconds

C.) after 4.5 seconds

D.) after 7.0 seconds

*The answer is B, after 3.5 seconds. If anyone wants to properly explain how this is the correct answer, I will give you brainliest.*
Mathematics
2 answers:
vfiekz [6]3 years ago
6 0

.

<span><span>h ( t ) = 112 t - 16 t²
</span><span> When the rocket is 196 feet in the air:
196 = 112 t - 16 t²
16 t² - 112 t + 196 = 0 </span></span>

divide everything by 4 ( just makes numbers smaller and easier to work with)

<span>
4 t² - 28 t + 49 = 0</span>

<span><span>Now factor the equation:
</span><span> ( 2 t - 7 )² = 0
2 t - 7 = 0
2 t = 7
t = 7 : 2
</span>t = 3.5 s</span>

<span>
The rocket will be 196 feet in the air after 3.5 seconds.</span>


Pie3 years ago
5 0

Answer: the choice would be b for edginuity

Step-by-step explanation:

hope this helps

You might be interested in
Graphing rational functions. I need help asap!!!!
Anastaziya [24]

Answer:

1.  

Vert. asymptote: x = {-3, 2}

Horiz. asymptote: y = 0

x-int: None

Question 3.

a. There is no hole

b. Vert. asymptote: x = {-2, 2}

c. f(x) = 0: x = {0, -1/2}

d. The graph has no hole at (-2, 4)

Question 4.

a. Vert. asymptote: x = {-2, 2}

b. f(x) = 0: x = {0, -1/2}

c. Horizontal asymptote: y = 2

d. The graph has no hole

I'm a bit confused.  Some of the things stated in the question aren't true like how there are holes in places where there aren't.

6 0
3 years ago
Please helppp maybe write out the equation too
jolli1 [7]
84 and 6 i believe not sure tho

complementary adds to 90°
7 0
2 years ago
Read 2 more answers
Select the best answer for the question
kozerog [31]
X=9 this is the answer for question 19

6 0
3 years ago
5. What is the value of x?<br> х<br> 4 in.<br> 3 in.<br> 6 in.
satela [25.4K]

Answer:

13in

Step-by-step explanation:

13in because if you add all

4 0
2 years ago
If you have 23500 apples and you had 42600 oranges how many do you have in all?
vekshin1

Answer:

66,100 in all.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Bottle A contains 250 milliliters of juice. Bottle B contains at least 20% more juice than bottle A. What is the minimum amount
    7·1 answer
  • What is the answer to:<br><br> |5 - 3| + |(-4) - 6| =
    15·2 answers
  • Lola Jean Ramos just turned 21 on June 19th and she loves to go dancing. From the given scenarios, which one describes the best
    10·2 answers
  • There was d dollars in the savings account when mr Duane withdrew $45 from the account. Then me Duane deposited and additional $
    15·1 answer
  • What is halfway between 1/3 and 1/2
    6·2 answers
  • A car travels along a straight stretch of road. It proceeds for 16.2 mi at 57 mi/h, then 24.6 mi at 44 mi/h, and finally 45.1 mi
    13·1 answer
  • The French club is holding a car wash fundraiser. They are going to charge $20 per car, and expect between 30 and 100 cars. Iden
    12·1 answer
  • Please help me idk this
    9·2 answers
  • Please help me on this question hery hard 5x5=
    5·2 answers
  • Which of the following expressions are equivalent to 3(2x – 8)? Select all that apply.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!