algebra

A few more question Id like for someone to check please.

1) what are the vertex, focus, and directrix of the parabola with the given equation? x^2-8x-28y-124=0

vertex (4,-5) focus (0,7) directrix y=-12

2) write an equation of a circle with given center and radius. center(-7,-6) and radius 2.

(x+7)^2+(y+6)^2=4

3) write an equation for the translation of x^2+y^2=49 by 3 units left and 4 units up.

(x+3)^2+(y-4)^2=49

4) what is the center and radius of the circle with given equation? (x-1)^2+(y+1)^2=4

center (1,-1) radius 2

5) what is an equation of a parabola with the given vertex and focus? vertex(-2,5) focus (-2,6)
this one don't know

6) a radio station has a broadcast area in the shape of a circle with equation x^2+y^2=5,625 where the constant represents square miles.
graph the equation and state the radius in miles
what is the area of the region in which the braodcast from the station can be picked up.

r=sqrt5623
r=75miles
A=pisqrt2
A=pi(5,625)^2miles
A=17671.49 miles

  1. 👍 1
  2. 👎 0
  3. 👁 1,591
  1. you are right!

    1. 👍 1
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. geometry

    Trisha drew a pair of line segments starting from a vertex. Which of these statements best compares the pair of line segments with the vertex? Answer A:Line segments have two endpoints and a vertex is a common endpoint where two

    asked by Anonymous on September 21, 2011
  2. algebra

    Rewrit the equation in vertex form. Name the vertex and y-intercept. y=3/5^2+30x+382 I need some help do not understand these type of problems.

    asked by Lee on October 31, 2012
  3. Algebra 2

    1.) The cost in C dollars of manufacturing x bicycles at Holliday's Production Plant is given by the function C(x) = 2x2 - 800x + 92,000. Find the minimum cost. 2.) The vertex of y = -3x2- 6x - 9 lies in which quadrant? 3.) Given

    asked by Becka on February 27, 2014
  4. Algebra

    The vertex of a parabola represented by f(x)=x^2-4x+3 has coordinates of (2,-1). Find the coordinates of the vertex of the parabola defined by g(x)=f(x-2). Explain how you arrived to your answer. My question: Would you move the

    asked by Anon on May 2, 2016
  5. Algebra

    An engineer designs a satellite dish with a parabolic cross section. The dish is 10 ft wide at the​ opening, and the focus is placed 8 ft from the vertex. ​a) Position a coordinate system with the origin at the vertex and

    asked by Lacey on November 16, 2016
  1. Geometry

    Write an equation of an ellipse in standard form with the center at the origin and with the given characteristics: Vertex (-3,0) and co-vertex (0,2)

    asked by tree on May 29, 2019
  2. Algebra2

    Write an equation of an ellipse in standard form with center at the origin and with the given vertex and co-vertex vertex at (-3,0) and co-vertex at (0.2)

    asked by Steve on March 8, 2017
  3. math

    Find b and c so that y=-1x^2+bx+c has vertex (-5,-4). Please help ASAP I'm having a really hard time on this question!!!

    asked by Andrea on June 15, 2019
  4. Math

    Find the vertex of F(x) by using the formula for the x-coordinate of the vertex. F(x)= 4x^2 - 3x - 6 I don't exactly understand this question. could someone clear it up and help me solve it? Thanks!!

    asked by Jenny on August 18, 2010
  5. Geometry

    Full Question: The coordinates for a rhombus are given (2a, 0), (0, 2b), (-2a, 0), (0,-2b). Write a plan to prove that the midpoints of the sides of a rhombus determine a rectangle using coordinate geometry. Be sure to include the

    asked by Unknown on February 6, 2017

You can view more similar questions or ask a new question.