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
likoan [24]
3 years ago
10

Derive the equation of the parabola with a focus at (0, −4) and a directrix of y = 4

Mathematics
1 answer:
Ierofanga [76]3 years ago
7 0
We are given with the focus coordinates of (0,-4) and a directrix equation of y=4,. we are asked for the equation of the parabola. The vertex of the parabola should lie in between the directrix and the focus. Hence, vertex should be at (0,0). the curve goes downwards. and the length of the latus rectum is 4. Hence the equation is x2=-16y
You might be interested in
What is the distance between the points (2, 4) and (7, 16)?<br><br> 13<br> 15.4<br> 16<br> 24
Veronika [31]
If you do the distance formula you get 13 as the answer.
3 0
3 years ago
PLEASE HELP ASAP IM REALLY TRING TO FINISH A stick has a length of $5$ units. The stick is then broken at two points, chosen at
Fed [463]

Answer:

0.16

Step-by-step explanation:

  • Length = 5 units
  • Number of broken sticks= 3
  • Equal lengths =  5 units/3

<u>See the picture attached for reference.</u>

As you see the best points are the green areas which covers 2 out of 5 zones.

<u>Since it is same for both broken points, the probability of  this is:</u>

  • 2/5*2/5 = 4/ 25 = 0.16

<u>Answer is</u> 0.16

8 0
3 years ago
a grocery store display has 2 boxes of cereal on the top row,3 boxes in the next row,4 boxes in the next row, and so on. How man
sveticcg [70]
There ya go! The answer is 8 rows. Added a picture to show you my work :)

8 0
3 years ago
Read 2 more answers
How many square feet are in 100 m squared
Vikentia [17]

Answer:

100 Sq Mt = 1135.69 Sq Ft

Step-by-step explanation:

We are required to find how many square feet are in 100 m squared.

1 meter = 3.37 ft

1 metre x 1 meter = 3.37 x 3.37 Sq ft

1 Sq Mt = 11.3569 Sq ft

100 sq Mt = 100 x 11.3569 sq ft

100 sq mt = 1135.69 Sq ft

Hence

100 Sq Mt = 1135.69 Sq Ft

8 0
3 years ago
Read 2 more answers
Consider the following three equations:
KengaRu [80]

Answer:

1.

y = 20(11) + 300 = 520

y = 5(11)(11) = 605    

y = 10(1.4)^11 = 404.96

hence the quadratic formula - y = 5x^2 has the largest y-value

2.

y = 20 (14) + 300 = 580

y = 5 (14) (14) = 980

y = 10(1.4)^ 14 = 1111.20   >    this is greater than both equations above

14 is the smallest value of x for which the value of the exponential equation is greater than the values of both the linear and quadratic functions

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
Other questions:
  • Hershey’s is making pumpkin-shaped chocolates for Halloween. These are spherically formed with a radius of 2 cm. What is the min
    9·1 answer
  • 4. a) Which method can be used to prove the triangles congruent?
    7·1 answer
  • A bacteria cell splits into two cells every hour. Write and evaluate an exponential expression to find how many cells there will
    11·1 answer
  • What is the volume of soup that will fit in a cylindrical-shaped can with a height that is 2 inches longer than the radius?
    11·2 answers
  • 4)
    6·1 answer
  • Brainliest for correct answer, any inapplicable answer or absurd answer will be deleted and reported.
    14·1 answer
  • Y=3x-1 y=-2x+4 what is the sum of x and y in the solution to the system​
    10·1 answer
  • Fine slope intercept form <br> y = x+7 (2, 3)<br> Help please and thanks
    15·1 answer
  • Graph the equation y=-3x-4 by plotting points
    12·1 answer
  • Solve the system of equations.<br> y=x+2<br> 4x-4y= 1
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!