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
Oliga [24]
3 years ago
12

What is the equation of the quadratic graph with a focus of (−4, seventeen eighths ) and a directrix of y = fifteen eighths

Mathematics
1 answer:
Lunna [17]3 years ago
5 0
Standard form for a parabola:
( x - h )² = 4 p ( y - k )
Vertex: ( h, k ) = ( -4, 2 )
Displacement from vertex to focus:
p = 2/8 = 1/4
( x + 4 )² = 4 · 1/4 ( y - 2 )
y = ( x + 4 )² + 2
or general form: 
x² + 8 x - y + 18 = 0 
You might be interested in
A man's basic wage for a 40-hour week
Mashcka [7]

Answer:

467.50

Step-by-step explanation:

do 61.5 times 5 to get 307.5 and add to 160 to get 467.50

6 0
3 years ago
Read 2 more answers
you have 12 cards. one out of every 4 cards is faceup. the rest are facedown. how many cards are faceup
umka2103 [35]
3 cards 

1/4 = x/12      1/4 = 3/12 
4 * 3 = 12
1 * 3 = 3
x = 3 
7 0
3 years ago
a survey mr thrones class shows that 5 out of 8 students will by lunch how many out of 720 students in the school will buy lunch
never [62]

5/8 that's how ratio of students that will buy lunch. so in order to find number students who will buy the lunch out of 720, just multiply 720 with 5/8 ie, 720x5/8 ie 450.

450 is answer

8 0
2 years ago
List all rational roots that are possible according to the rational zero theorem. x^3-5x^2-9x+45=0
Lina20 [59]

-3, 3, 5.

https://www.wolframalpha.com/input/?i=%28x%5E3%29-%285x%5E2%29-9x%2B45%3D0

8 0
3 years ago
An english reading list has 9 american novels and 7 english novels. A student must read 5 from the list and at least 3 must be e
Elenna [48]

_7C_3\cdot {_{13}C_2}=\dfrac{7!}{3!4!}\cdot\dfrac{13!}{2!11!}=\dfrac{5\cdot6\cdot7}{2\cdot3}\cdot\dfrac{12\cdot13}{2}=2730

7 0
3 years ago
Other questions:
  • Which one of the following is a a solution of the system? y<-1,y>8
    13·1 answer
  • Charlie runs at a speed of 3 yards per second. About how many miles per hour does Charlie fun?
    8·2 answers
  • Find the area of a playing field whichs area is 15 meters
    12·1 answer
  • A car is driving at 70 kilometers per hour. How far, in meters, does it travel in 5 seconds?
    15·1 answer
  • Area of a 18cm wide rectangle is 342 cm squared. what is the length?
    5·1 answer
  • Here are two expressions whose product is a new expression, :
    10·1 answer
  • 9) Sam had 7 days to complete 150 math problems. He had 5 hours a day to work on these
    13·1 answer
  • Pls help me I really need this
    8·2 answers
  • Please help asap!!!!!!!!
    5·1 answer
  • 2p/r =t solve for r<br> please solve this equation i will reward 50 points
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!