1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
belka [17]
4 years ago
9

an equation of a circle is x2 + y2 + 10x – 6y + 18 = 0. . . . A.Show all your work in determining the center and radius of this

circle. . . B.In complete sentences, explain the procedure used.
Mathematics
1 answer:
MariettaO [177]4 years ago
7 0

A circle is a set of points in a plane equidistant from a fixed point. It has a general formula of x² + y² = r². This is if the center is at the origin. However, if the center at point h and k, the equation becomes (x-h)² + (y-k)² = r².<span>

We write the given equation in the form (x-h)² + (y-k)² = r² by completing the square.
</span>

<span>x</span>²<span> + y</span>²<span> + 10x – 6y + 18 = 0</span>

<span> (x² + 10x + 25 )+ (y² - 6y + 9) = −18 + 25 + 9 = 16
(x + 5)² + (y + 3)² = (4)²

Therefore,

center = (-5, -5)
radius = 4</span>

You might be interested in
Hi I need help on my math can you help me
ohaa [14]
Sure I’ll help you out
8 0
3 years ago
Find the value of x so that the function has the given value.<br> k(x)=7;k(x)=49
geniusboy [140]

Answer:

i don't what you want me to do here...

You gave me the same problem just two different numbers so maybe the answer is 7... idek tho bro

k times x = 7

k times x = 49

Step-by-step explanation:

6 0
3 years ago
I will give the brainliest crown to whoever gets it right!
qaws [65]

Answer:

71

Step-by-step explanation:

x + (x+2) + (x+4) + (x+6) + (x+8) + (x+10) = 456

6x + 30 = 456

add -30 to each side

6x = 426

divide each side by 6

x = 71

4 0
3 years ago
Read 2 more answers
Rewrite 6(10+2) using the distributive property. Then simply.
Montano1993 [528]

\begin{gathered} 6(10+2)=(6\cdot10)+(6\cdot2) \\ 6(10+2)=60+12 \\ 6(10+2)=72 \end{gathered}

Explanation

the distributive property states that multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together

a(b+c)=ab+ac

so

Step 1

6(10+2)

apply the distributive property

6(10+2)=(6\cdot10)+(6\cdot2)

now, calculate ot simplify

\begin{gathered} 6(10+2)=(6\cdot10)+(6\cdot2) \\ 6(10+2)=60+12 \\ 6(10+2)=72 \end{gathered}

I hope this helps you

5 0
1 year ago
Danielle earns a 8.25% commission on everything she sells at the electronics store where she works. She also earns a base salary
arsen [322]
She earns $1046 that week

5 0
3 years ago
Other questions:
  • The number 18 is what percent of 15
    6·2 answers
  • Help me plzzz 10 only
    10·2 answers
  • 06.01 LC)
    12·1 answer
  • What is the least angle measure by which the figure can be rotated so that it maps onto itself?
    15·2 answers
  • You need to make at least 360 wraps for a party. You can make 9 wraps per minute. How long will it take you to make the number o
    14·1 answer
  • Kaitlyn has a four-game average of 87. What does she
    11·1 answer
  • I'm not sure what the answer is. If you know, please help me out.<br>​
    6·2 answers
  • QUESTION 1
    15·1 answer
  • Anton is drawing a flag of Switzerland, which has a square shape, for a school project. If he wants the flag to have sides that
    8·2 answers
  • Please help! Billy just received $10 for his birthday and immediately spent $2.50 on a pack of baseball cards. He then wants to
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!