3 years ago

Find the center and the radius of the circle with the equation: x^2 - 2x + y^2 + 4y + 1 = 0

Mathematics

2 answers:

Stells [14]3 years ago

7 0

What are the ^ supposed to mean multiplecation?

anygoal [31]3 years ago

7 0

Answer:

center: (1, -2)

radius: 2

You might be interested in

How to find first Derivative of -2(e^2x+1)^3?

Dima020 [189]

Use the chain rule. Let

$y=-2(e^{2x}+1)^3$

and take $u=e^{2x}+1$ . The chain rule says

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac{\mathrm dy}{\mathrm du}\cdot\dfrac{\mathrm du}{\mathrm dx}$

The relevant derivatives are then

$\dfrac{\mathrm dy}{\mathrm du}=\dfrac{\mathrm d(-2u^3)}{\mathrm du}=-6u^2$

(power rule)

$\dfrac{\mathrm du}{\mathrm dx}=\dfrac{\mathrm d(e^{2x}+1)}{\mathrm dx}=2e^{2x}$

(chain rule applied to $e^{2x}$ ; the constant vanishes)

So,

$\dfrac{\mathrm dy}{\mathrm dx}=-6u^2\cdot2e^{2x}=-12e^{2x}(e^{2x}+1)^2$

5 0

2 years ago

Answer and explain. 30 points given out

Naddik [55]

This is what I get

(120-60%)-50%=24

8 0

2 years ago

$61.60 for parts and labor rate is $30.00 per hour total cost 136.60 how many hours will.the job take

seropon [69]

Answer: 5

Step-by-step explanation:

6 0

2 years ago

wo 6-sided number cubes are rolled for a board game. The 2 numbers are then added together to determine how many spaces the play

Nana76 [90]

Answer:

The odds of rolling a 3 on a 6-sided number cube is 1 out of 6. The odds of rolling a 3 on either of two 6-sided cubes are 1/3. This is because 1/6 * 2 = 1/3. Therefore, an average of one-third of rolls will have a 3 in them. 1/3 expressed as a decimal is .3 repeating (.3333333 etc) and that rounds to 33 which is less than 34.

Step-by-step explanation:

3 0

2 years ago

What does 6 pounds plus 6 ounces equals to

EleoNora [17]

That is equal to 6.375

3 0

3 years ago

Read 2 more answers