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VMariaS [17]
3 years ago
6

Write the equation of the circle with radius 2 and center (2,-3)

Mathematics
1 answer:
Luba_88 [7]3 years ago
8 0

Answer:

(x-2)^{2} + (y+3)^{2} = 4

Step-by-step explanation:

Formula

Centre (a,b) \\Radius r(x-a)^{2} + (y-b)^{2} = r^{2}\\\\Centre (2, -3) \\Radius 2(x-(2))^{2} + (y-(-3))^{2} = 2^{2}\\(x-2)^{2} + (y+3)^{2} = 4

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Squareroot(y-1) + 3 = y
jek_recluse [69]
Note:xy means x times y and x(y) means the same thing

so
first we get rid of square root then
make the equation equal to zero becaues if
xy=0 then x or/and y=0



squareroot(y-1)+3=y

isolate the squareroot
subtrac 3 from boht sides

squareroot(y-1)=y-3

square both sides (since they are equal, you should be able to square both sides and still make it true)

(squareroot(y-1))^2=(y-3)^2
(y-1)=(y-3)(y-3)
y-1=y^2-6y+9
subtrac y from both sides
-1=y^2-7y+9
add 1 to both sides
0=y^2-7y+10
find what two number multiply to make 10 and add to get -7
the answer is -2 and -5

0=(y-5)(y-2)
therfore
y-5=0
and/or
y-2=0

therefor
y=5 or/and 2 might work
let's try out 2
square root(2-1)+3=2
square root(1)+3=2
1+3=2
false
so 2 doesn't work



let's try 5
squareroot(5-1)+3=5
squareroot(4)+3=5
2+3=5
5=5
true

y=5
7 0
3 years ago
How many times can 36 go into 477
boyakko [2]
477/36= 13.25 
You divide the two numbers to see that 36 will go into 477, 13.25 times. 
8 0
3 years ago
Read 2 more answers
Please help me solve this !<br> will mark brainliest !<br> (spammers reported)
lions [1.4K]

Answer

-10

Step-by-step explanation:

-8w-7=9

add 7 to both sides

-8w=16

divide by negative 8 on both sides

w=-2

w-8=-10

3 0
3 years ago
Read 2 more answers
Use the Pythagorean Theorem to find the distance from Anna's house to the tree house.
valentina_108 [34]

Answer:

A²+b²=c²

Step-by-step explanation:

4 0
3 years ago
Please help this is due in about three minutes
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Answer:

13) Constant

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