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
Setler [38]
2 years ago
10

Find the equation of a circle with a center at (0, -4) and a point on the circle is (6, 0).

Mathematics
1 answer:
EastWind [94]2 years ago
8 0

Answer:

x^2 + ( y + 4)^2 = 52

Step-by-step explanation:

Equation of circle with center (a , b) and radius, r is :

(x -a)^2 + ( y -b)^2 = r^2

Given :  a = 0 , b = - 4

Step 1 : Find the radius.

       Given ( 6 , 0 ) lies on the circle. Therefore the distance between the center (0 , - 4) of the circle and ( 6 , 0 ) gives the radius of the circle.

   r = \sqrt{( 0 - 6)^2 + ( -4 - 0)^2} \\\\

     = \sqrt{ 36 + 16 } \\\\= \sqrt{52}

Step 2 : Equation of circle.

  (x - 0)^2 + (y -( - 4))^2 = (\sqrt{52})^2\\\\x^2 + ( y+ 4)^2 = 52

You might be interested in
the scatter plot shows the number of students per class al monida middle school and the number of magazine subscription each cla
Marrrta [24]
For this case, the first thing to do is to observe the value that the function takes on the axis y, when on the x axis we have 30 students.
 We have then:
 For x = 30:
 The value of y is given by:
 y = 175 (approximately)
 Answer:
 
y = 175 subscriptions
3 0
2 years ago
Read 2 more answers
How do the lengths of the corresponding sides compare? How do you know?
ra1l [238]

Step-by-step explanation:

if two have the same shape, they are called "similar". When two figures are similar, the ratio of the lengths of their corresponding sides are equal. To determine if the triangles show are similar, compare their corresponding sides. Triangles ABC is similar to triangle DEF.

7 0
2 years ago
What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? Explain your reasoning.
spin [16.1K]

Doubling all the dimensions of a triangular pyramid, the volume of the pyramid becomes quadrupled.

Explanation:

The volume of the triangular pyramid is given by

$V_{1}=\frac{1}{3} \cdot b \cdot h$

where b is the base of the pyramid and

h is the height of the pyramid.

Doubling all the dimensions of the pyramid, we have,

b=2b and h=2h

Thus, volume of the triangular pyramid is given by

$V_{2}=\frac{1}{3} \cdot2b \cdot 2h$

Multiplying, we get,

$V_{2}=\frac{1}{3}4bh

$V_{2}=4\frac{1}{3}bh

V_2$=4 \cdot V_{1}$

Thus, doubling all the dimensions of a triangular pyramid, the volume of the pyramid becomes quadrupled.

4 0
2 years ago
Read 2 more answers
A rectangle is 5 cm wider than twice its length. If the perimeter of the rectangle is 70 cm, then what is the area?
kifflom [539]

Step-by-step explanation:

The dimensions of the rectangle are two unknowns: The length "l" and the width "w"

The perimeter of a rectangle is found as P = 2*l + 2*w

We also know that the length is 5cm more than twice the width. l = 2*w + 5

These two equations gives us a system of linear equations.

P = 2*l + 2*w

l = 2*w + 5

We can use substitution to replace the "l" in the first equation with 2*w + 5

P = 2*(2*w + 5) + 2*w

P = 4*w + 10 + 2*w

P = 6*w + 10

we know the perimeter is 70

70 = 6* w + 10

subtract 10 from both sides

60 = 6* w

w = 10

Now that we know the width, we can find the length by substituting 10 for "w" in the second equation.

l = 2* 10 + 5

l = 20 +5

l = 25

the dimentions of the rectangle are 25cm x 10 cm

6 0
2 years ago
Read 2 more answers
Combining like terms ,algebra
telo118 [61]

Step-by-step explanation:

5x + 2 + 3x = 8x + 2

3 + 17x + 8 = 17x + 11

19 + 6x + 2x = 8x + 19

14x + 7 + 4 = 14x + 11

9x - 3 - 7x + 4 = 2x + 1

12x + 3x - 6 - 7f = 15x - 7f - 6

14x + 7 - 3x = 11x + 7

13z + 6u + 8x + 19 - u = 13z + 5u + 8x + 19

3z + 6 + 4z + 9 + 8u = 7z + 8u + 15

2x + 8z + 13u + 6z + 4u = 2x + 14z + 17u

14y + 13x + 12y + 19x + 4 = 26y + 32x + 4

5x + 18 - 13y + 12x + 8y = 17x - 5y + 18

21v + 8 - 12v - 7 + 3t - t = 9v + 2t + 1

3t + v - t + 7v = 2t + 8v

-1 + 18x -3y + x + 9y = 19x + 6y - 1

4x + 5y + 5x + 10y = 9x + 15y

8 0
2 years ago
Read 2 more answers
Other questions:
  • Simplify 7t · s · 3rt
    11·2 answers
  • angelina has 5 cakes. She wants to cut them into 1/5 pieces. How many pieces will she be able to cut??
    7·1 answer
  • Are non-empty sets and A × B = B × A then ……
    10·1 answer
  • Which is the r- value of the following data to three decimals places?
    15·1 answer
  • Bridget has swimming lessons every fifth day and diving lessons every third day. If she had a swimming lesson and a diving lesso
    11·1 answer
  • Last month, a store sold 110 video games. This month, the store sold 77 video games. Find the percent decrease. Round the neares
    14·1 answer
  • HELP PLEAAASEEEEE<br>Can someone find the domain and range of this function PLEASE<br>y = 2/x + 3
    10·1 answer
  • A'B'C is a translation of ABC. what is the length?​
    8·2 answers
  • What is the slope in the equation y= 4x+9
    11·1 answer
  • Reciprocal of 9 2/3 as a fraction
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!