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
Agata [3.3K]
2 years ago
15

I am really confused and need help.

Mathematics
1 answer:
Ipatiy [6.2K]2 years ago
4 0

Answer:

The 3rd, 4th, and 6th are correct but I'm not sure if the second would be correct as well.

Step-by-step explanation:

You might be interested in
Step by step what is 2z+7z-z+5
MArishka [77]
///Hope this helps///

3 0
3 years ago
Read 2 more answers
.711 rounded to the nearest tenth
Natalka [10]

Answer: 710

Hope this helps

<h2>Please mark me as brainliest</h2>

8 0
3 years ago
Read 2 more answers
If the perimeter of a square field measures 440 yards , what is the length of each side ?
NARA [144]
Since it is a square, all sides are equal.
Divide the 440 by 4 to find the length of each side.
440/4 = 110 yards
7 0
3 years ago
Read 2 more answers
A stone is launched into the air from a height of 240 feet. The height, h, of the stone, in feet, t seconds after launch is give
rosijanka [135]

A projectile is an object <u>launched</u> into space, and moving under the <em>influence</em> of <u>gravity</u> and <u>momentum</u>. The <em>stone</em> here is an example. Thus, the <em>time</em> taken for the stone to reach the ground is 10 seconds.

On <em>launching</em> of the stone into <u>space</u>, it behaves as a <u>projectile</u>. Thus moving under the <em>influence</em> of gravity and its momentum. Its <u>momentum</u> is the <em>product</em> of its <u>mass </u>and <u>velocity</u>.

The height h, is given as:

h = 16t^{2} + 32t + 240

Differentiating the expression with respect to t, we have;

32t + 32 = 0

t = -1 seconds

Substitute the value of time, t, in the equation for the height;

h = 16 - 32 + 240

  = 224

h = 224 m

Total height, S = 240 + 224

                         = 464

S = 464 m

The total height covered by the stone is 464 m.

From the second equation of <em>free fall</em>,

S = Ut + \frac{1}{2}gt^{2}

S = \frac{1}{2}gt^{2}

464 = \frac{1}{2}*9.8*t^{2}

t^{2} = \frac{928}{9.8}

  = 94.694

t = \sqrt{94.694}

 = 9.7311

t ≅ 10 seconds

The <em>time taken</em> for the stone to hit the ground is 10 seconds.

Thus option A is the required answer.

Visit: brainly.com/question/13834669

7 0
2 years ago
The function f is defined by f(x)=2x^2-4.<br> Find f(-x)
Vedmedyk [2.9K]
First of all, since all powers of x in this function are even, the entire function is even.  Thus, using -x as input doesn't change the function.  Thus, f(-x)=2x^2-4.

6 0
3 years ago
Other questions:
  • An automobile manufacturer claims that its van has a 44.3 miles/gallon (MPG) rating. An independent testing firm has been contra
    7·1 answer
  • Answer Correctly For Brainliest! Wrong Answers Will Be Reported
    11·1 answer
  • What is the additive inverse of the complex number –8 + 3i?
    7·2 answers
  • Which functions have an additive rate of change of 3?
    7·2 answers
  • Find the value of the following expression:
    7·1 answer
  • What is the fraction for the following decimal expansion?<br><br> 0.1111111111
    13·2 answers
  • Given the function f (x) = 8x-1 what is the corresponding value when x = -1/2 <br>HELP ASAP
    5·1 answer
  • A translation maps (x, y) to
    7·1 answer
  • Learn with<br> Add.<br> (2h + 8) + (9h + 4)<br> Submit
    7·1 answer
  • The difference of six times a number and eight times the same number is 12.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!