All categories

4 years ago

Part a) Write the equation of the circle by completing the square.

1 answer:

7 0

Hello :
x² + 4x + y²- 2y = 20

x² + 4x+4-4 + y²- 2y+1-1 = 20
(x² + 4x+4)-4 + (y²- 2y+1)-1 = 20
(x+2)² + (y-1)² = 5²
the radius is : 5 the center: (-2,1)

You might be interested in

Write the slope-intercept form of the equation of each line. Identify the slopes y-intercept WILL GIVE BRAINIEST

slega [8]

Answer:

9) slope= (-1/5) y-intercept is 1 equation is y=-1/5x+1

11) slope= (-1/5) y-intercept is -4 equation is y=-1/5x-4

13) slope= (-4) y-intercept is 5 equation is y=-4x+5

Step-by-step explanation:

hope this helps :3

if it did pls mark brainliest

5 0

3 years ago

How do you Factor 3bc-2b-10+15c=

VLD [36.1K]

It is in simplified form. You cannot add these together because they are different terms. EX: bc, b, and c. They don't correspond, so we can't add/subtract/multiply/divide.

5 0

3 years ago

Probability is the chance that some event will occur or a guarantee.

Luden [163]

Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one

6 0

3 years ago

kahal solved the inequlity 4x-4>20. his work is shown below. step 1: 4x-4>20 step 2: 4x>16 step 3: x>4 where did kah

Karo-lina-s [1.5K]

Kahal made an error in step 1 in his calculation.

Step-by-step explanation:

Inequality solved by Kahal;

4x-4>20

Steps used by Kahal

step 1: 4x-4>20

step 2: 4x>16

step 3: x>4

Kahal made mistake in first step where he subtracted 4 from 20. because to eliminate 4 we will add 4 on both sides which will make;

Step 1: 4x-4+4 > 20+4

4x>24

Thus,

Kahal made an error in step 1 in his calculation.

Keywords: inequality, addition

Learn more about addition at:

#LearnwithBrainly

7 0

3 years ago

Evaluate the expression. Please help me

lianna [129]

Answer: the answer is - 4.5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers