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
CaHeK987 [17]
3 years ago
13

Which of these describes a unique polygon?

Mathematics
1 answer:
PtichkaEL [24]3 years ago
4 0
The last one is correct
You might be interested in
Using the data in the table,what is the cost of 3 apples?
anastassius [24]

Answer:you add anmd subtract

Step-by-step explanation:

the answer is 3 to 4

4 0
3 years ago
I don’t know how to do this
DochEvi [55]

Answer:

y = 1/4 (3 s - 8)

Step-by-step explanation:

hopes this helps:)

4 0
3 years ago
Write the equation for a parabola with a focus at (1,2)(1,2)left parenthesis, 1, comma, 2, right parenthesis and a directrix at
Tanya [424]

Answer:

  y = -1/8(x -1)² +4

Step-by-step explanation:

The equation of a parabola can be written from focus and directrix using the form ...

  y = 1/(4p)(x -h)² +k

where p is the distance from vertex to focus, and (h, k) is the vertex.

The vertex-focus distance is half the distance from the directrix to the focus. Here, that is ...

  p = (2 -6)/2 = -4/2 = -2

The vertex is halfway between the focus and directrix on the same vertical line, so has coordinates ...

  (h, k) = ((1, 2) +(1, 6))/2 = (1, 4)

__

Using these values of p and (h, k), we find the equation of the parabola to be ...

  y = 1/(4(-2))(x -1)² +4

  y = -1/8(x -1)² +4

_____

<em>Additional comment</em>

You can check the graph by considering the definition of a parabola: each point on the curve is equidistant from the focus and the directrix. This is easily verified for points on the horizontal and vertical lines through the focus. For example, point (5, 2) is 4 units from the focus, and 4 units from the directrix.

6 0
2 years ago
URGENT please help<br><br> Find part B
lyudmila [28]

Answer:

b = 45 / 4 = 11 1 /4.

Step-by-step explanation:

We are dealing with a (30,60,90)-triangle, therefore z = 15 sqrt(3) / 2. So as well b = (15 sqrt(3) / 2) sqrt(3) / 2 = 45 / 4.

3 0
3 years ago
Ahmed is sitting on a dock watching a float plane in a harbour. At a certain time, the plane is 350 m above the water and 470 m
stira [4]

9514 1404 393

Answer:

  48°

Step-by-step explanation:

The relevant trig relation is ...

  Sin = Opposite/Hypotenuse

  sin(α) = (350 m)/(470 m) = 35/47

  α = arcsin(35/47) ≈ 48.13°

The angle of elevation of the plane is about 48°.

8 0
3 years ago
Other questions:
  • HELP FIRST ONE BRIALY!!!!!
    10·1 answer
  • Can someone please take me step by step to find x?
    9·2 answers
  • If the sum of all interior angles of a regular polygon is 1080 degrees then number of sides of the polygon is?
    7·1 answer
  • How to estimate 26.2 and 18.5
    8·1 answer
  • What is the answer to 5+1×10?
    11·2 answers
  • Past the core
    12·1 answer
  • Find f(4) for the following function: *
    14·1 answer
  • Which of the following describes an irrational number?​
    13·1 answer
  • Mr nealy has $107.40 he withdrew $120 from the ATM. Does he have enough money to pay for the meal? If he has enough money, how m
    11·1 answer
  • A gift box has a surface area of 6.25 square feet. What is the surface area of the box in square inches?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!