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
Amanda [17]
3 years ago
6

Find the center and radius of the circle with the equation. Please show work!

Mathematics
1 answer:
mina [271]3 years ago
3 0

Answer:

<h2>(1, -2)</h2>

Step-by-step explanation:

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - center

r - radius

We have:

x^2-2x+y^2+4y=4\qquad\text{add}\ 1^2\ \text{and}\ 2^2\ \text{to both sides}\\\\x^2-2x+1^2+y^2-2(-2)(y)+2^2=2(1^2)(2^2)\qquad\text{use}\ (a\pm b)^2=a^2\pm2ab+b^2\\\\(x-1)^2+(y-(-2))^2=8\\\\h=1,\ k=-2\to(1,\ -2)

You might be interested in
Barry is thinking of a number that is greater than -7 and less than -6 3/4. which numbers could be Barry's number? Select all th
pav-90 [236]
2 and 6 both apply!!
3 0
3 years ago
A bowl contains candies of the same size in three flavors orange strawberry and pineapple. If the probability of randomly pullin
ValentinkaMS [17]

Answer:

D 6 out of 9

Step-by-step explanation:

think about it this way, if you have only 3 different types of candy that you can pull from a bag, and the two candies probably is already listed, then you can find the third candy but taking the total about of the two listed probability of picking a candy (in this case it would be 3/9) and subtract that from the total amount of candies in the bag.  

3/9 - 9/9 = 6/9

hope this helps,

<h3><u><em>please mark brainliest </em></u></h3>

7 0
3 years ago
12a = 4 what is a HELP ME PLZ
lisabon 2012 [21]
Answer: 3

3x4 is 12

Hope this helps!
4 0
3 years ago
Read 2 more answers
the ratio between length and breadth of a rectangle is 7 : 5 find its length and breadth if it its perimeter is 60 m ​
Furkat [3]

Answer:

length= 17.5 m , breadth = 12.5 m

Step-by-step explanation:

The ratio of length : breadth = 7 : 5 = 7x : 5x ( x is a multiplier )

Then

2l + 2b = perimeter ( l is length, b is breadth )

2(7x) + 2(5x) = 60

14x + 10x = 60

24x = 60 ( divide both sides by 24 )

x = 2.5

Then

length = 7x = 7 × 2.5 = 17.5 m

breadth = 5x = 5 × 2.5 = 12.5 m

6 0
3 years ago
Does this table represent a function ? Why or why not
sammy [17]
No, because one x-value corresponds to two different y-values
4 0
3 years ago
Read 2 more answers
Other questions:
  • To covert 345 milliliters to liters, which proportion should be used?
    12·2 answers
  • The ordered pair below is a solution to which equation? (40, 5)
    6·2 answers
  • X divided by two minus 4=10
    14·1 answer
  • Charlie has an adult Netherlands dwarf rabbit that weighs 1.2 kilograms. Cliff's adult Angora rabbit weighs 2.9 times as Charlie
    15·2 answers
  • Triangles A B C and X Y Z are shown. Angles A C B and X Z Y are right angles. The length of X Y is 10, the length of Y Z is 6, a
    9·2 answers
  • 20% of what number is 18​
    7·2 answers
  • Which equation represents the relationship between the x -values any the y -values in the table?
    11·1 answer
  • What is the length of the line?<br> Choose 1 answer:
    6·1 answer
  • The ________________ of -6 = 6 because it is 6 units from zero on the number line.
    11·1 answer
  • Solve for x for this triangle (geometry)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!