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Brums [2.3K]
3 years ago
15

Please help me. Please.

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
7 0
8,3 is QI
9,-2 is QIV
-3.5,-6 is QIII
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"Complete the square" to convert the equation of each circle to graphing form. Identify the center and the radius.
Reil [10]

Answer:

The center is (-3,2) and the radius is r=2

Step-by-step explanation:

The general equation of the given circle is

x^2+6x+y^2-4y=-9

Add the square of half the coefficient of the linear terms to both sides of the equation to obtain;

x^2+6x+3^2+y^2-4y+(-2)^2=-9+3^2+(-2)^2

x^2+6x+9+y^2-4y+4=-9+9+4

x^2+6x+9+y^2-4y+4=4

The quadratic trinomials in x and y on the left side of the equations are perfect squares.

We factor to obtain;

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

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

Comparing to:

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

The center is (-3,2) and the radius is r=2

8 0
3 years ago
The vertex of this parabola is at (-3, -2). which of the following could be its equation?
professor190 [17]

Answer:

B

Since the vertex is (-3,-2) The x value should be +3

7 0
2 years ago
Read 2 more answers
Can someone help, please
Artist 52 [7]

Answer:

Slope is 1/4

Step-by-step explanation:

5 0
1 year ago
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Help with this!!plz. Asap
gizmo_the_mogwai [7]
Hey there! :D

So, we know that there are 3 z's and 3 6's. 

3*z= 3z

6*3= 18 

3(z+6) <== equivalent expression 

3z+18 <== equivalent expression

z is by itself. It shouldn't combine. It should stay the same. 6 as a unit is separate from z. 

Choices "B" and "E" are correct.

I hope this helps!
~kaikers
5 0
3 years ago
You make $500 per day. How much money will you make per year? (There are 250 working days in a year).
Gennadij [26K]

Answer:

125000

Step-by-step explanation:

500x 250 = 125000

7 0
2 years ago
Read 2 more answers
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