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
Airida [17]
3 years ago
14

Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and

calculations to receive credit x^2 - 4x + y^2 + 8y = -4​

Mathematics
1 answer:
Bond [772]3 years ago
8 0

<em>x</em> ² - 4<em>x</em> + <em>y</em> ² + 8<em>y</em> = -4

(<em>x</em> ² - 4<em>x</em> + 4) + (<em>y</em> ² + 8<em>y</em> + 16) = -4 + 4 + 16

(<em>x</em> - 2)² + (<em>y</em> + 4)² = 16

(<em>x</em> - 2)² + (<em>y</em> + 4)² = 4²

which is the equation of a circle centered at (2, -4) and with radius 4.

You might be interested in
Craig and Tom, working together, can clean the house in 8 hrs, working alone, Tom takes four times as long as Craig, How long do
aksik [14]

Let x = Craig's time

Let y = Tom's time

Create a system of equations to solve this problem.

8 = x + y

y = 4x

Substitute 4x into the y variable in the first equation.

8 = x + 4x. Combine like terms

8 = 5x. Divide each side by 5.

1.6 = x

Craig takes 1.6 hours to clean the house

5 0
4 years ago
Read 2 more answers
if a committee of 4 is to be chosen at random from the class of 11 students what is the probability of any particular commuter b
Darina [25.2K]

i think the answer is 4/11 because the 4 people has a 1%  chance out of the 11 people

7 0
3 years ago
2x + 3y is less than or equal to 15
Sholpan [36]

Answer:

less

Step-by-step explanation

sorry if I'm wrong

5 0
3 years ago
-22-x=5+6x+9<br> how do i solve this
Margarita [4]

Answer:

  1. 6x+x=-36
  2. 7x=-36
  3. x=-36/7
6 0
3 years ago
The radius of a cylindrical construction pipe is 3.5ft . If the pipe is 38ft long, what is its volume? Use the value 3.14 for (p
Wittaler [7]

Answer:

1462 cubic ft

Step-by-step explanation:

The volume of a cylinder can be found using the equation \pi r^{2}h=V. The radius is 3.5 ft and the height is 38ft.

(3.14)(3.5^{2})(38)=V

(3.14)(12.25)(38)=V

1461.67=V and rounded to the nearest whole numbe, 1462 cubic ft=V

3 0
3 years ago
Other questions:
  • 8x^2-2x-1=0 find the solution
    14·1 answer
  • write the formula used to find length when the breadth height and volume are known........breadth when the length height and vol
    8·2 answers
  • I need to simplify ​
    7·1 answer
  • 4 If 2 sin X = 1 (where X is the measure of an acute angle), then X =
    5·1 answer
  • Abhinav read 14of a book, and if he reads 77 more pages of the book, then Abhinav will complete 69% of the book. How many pages
    5·1 answer
  • Determine whether the expression is a polynomial. If it is a polynomial state the degree of the polynomial
    10·1 answer
  • If a carpet is advertised at $20 per square yard, what is the cost per square foot?
    7·1 answer
  • Plz help me well mark brainliest if you are correct!…
    9·2 answers
  • Find the equation of the line shown
    15·2 answers
  • MARK AS BRAINLIEST At a sale this week, a table is being sold for $279. This is 62% of the original price.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!