2 years ago

What is the correct answer

Mathematics

1 answer:

jok3333 [9.3K]2 years ago

3 0

Answer:

Step-by-step explanation:

You might be interested in

"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

Drag each tile to the correct box.

mr_godi [17]

Answer:

-2.76

-2.57

-2.5

-1.85

-1.58

2.5

2.85

Hopefully this is what you mean. Have a nice day!

Step-by-step explanation:

7 0

3 years ago

If the ratio of a circle's sector to its total area is 3/8, what is the measure of its sector's arc?

mars1129 [50]

Imagine the area is 360 degrees, or $2\pi$ radians.

You would multiply it by (3/8) to get your answer.

6 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7Ba%2Bb%7D%20%7D%7B%5Csqrt%7Ba-b%7D%20%7D%20%2B%5Cfrac%7B%5Csqrt%7Ba-b%7D%20

andrezito [222]

Answer:

$\frac{(a+b)}{a^{2} -b^{2} }$ + $\frac{(a-b)}{a^{2} -b^{2} }$ = $\frac{2a}{a^{2} -b^{2} }$

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

What is the solution to: 2x + 14= 34? Pls do your best no wrong answers

Lelu [443]

Answer: x=10

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers