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
drek231 [11]
3 years ago
13

A parabola has a vertex at (0,0). The focus of the parabola is located at (4,0). What is the equation of the directrix? x=−4 y=−

4 x=4 y=4
Mathematics
2 answers:
rewona [7]3 years ago
7 0

Answer:

Step-by-step explanation:

The vertex and focus are horizon aligned, so the parabola is horizontal and the directrix is a vertical line.

The vertex is halfway between focus and directrix. Directrix: x = -4

Greeley [361]3 years ago
5 0

Answer:

-4

Step-by-step explanation:

Got it right on edge

You might be interested in
An isosceles triangle always has three interior angles that measure 60° each.
Nataly [62]

Answer:

False

Step-by-step explanation:

The definition given is that of an equilateral triangle, NOT that of an isosceles triangle. An isosceles triangle has <em>at least</em> two angles that are equal by definiton. They need not be 60 degrees. For example, a triangle with angle measures of 140, 20, and 20 is an isosceles triangle because two of the angles are equal. Hope this helped!

5 0
3 years ago
Alex has 520 yards of fencing to enclose a rectangular area.
Pavlova-9 [17]
<span>Perimeter =2w+2L= 520.
We can solve this by understanding that the area is maximized by a square
Therefore L=w.

p=2w+2w=520=4w
w=130

Area
 
A=wL=130(130)= 16900 square yards</span>
6 0
3 years ago
Read 2 more answers
What is the equation?​
elena-s [515]

Answer:

  cost = 1.35n

  $33.75 for 25 songs

Step-by-step explanation:

Based on the numbers given, the cost is proportional to the number of songs downloaded. The constant of proportionality is the cost of one song: 1.35.

  cost = 1.35n

For 25 songs, ...

  cost = 1.35·25 = 33.75 . . . . dollars

__

The equation is ...

  cost = 1.35n

5 0
4 years ago
Each person needs to rent a helmet for $5. Write the expression for the total cost for the helmets
Artyom0805 [142]

Step-by-step explanation:

you need to find out how many poeple u have first

4 0
2 years ago
What is the difference in elevation between a plane flying 14,200 feet above sea level and a submarine traveling 890 feet below
marissa [1.9K]

maths is gud to us 151617128




5 0
3 years ago
Read 2 more answers
Other questions:
  • Phil is riding his bike. He rides 21 miles in 2 hours, 31.5 miles in 3 hours, and 42 miles in 4 hours. Find the
    11·1 answer
  • Franco is reading a book with 482 pages he reads 30 pages each night. how many pages will he read in 7 nights? show your work
    8·2 answers
  • Put this distance in order from least to greatest 3/16 miles 1/8 miles 3/4 miles
    9·1 answer
  • Help plz ☝️☝️☝️☝️☝️☝️☝️
    5·1 answer
  • What is the weight in grams of a liquid that exactly fills a 202.0 mL container if the density of the liquid is
    13·1 answer
  • A flower shop has 744 carnations to tie into bunches of 12 each and 1,896 roses to tie into bunches of 24 each. How many bunches
    14·2 answers
  • Para un proyecto de arte, omar debio trasladar en la cuadricula la figura de colocar segun estas indicaciones 6 cuadraditos haci
    8·1 answer
  • Very easy math question
    7·1 answer
  • F(g(4))=<br> <img src="https://tex.z-dn.net/?f=f%28g%284%29%29%3D" id="TexFormula1" title="f(g(4))=" alt="f(g(4))=" align="absmi
    13·1 answer
  • The circumference of a circle is ________
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!