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
Ber [7]
2 years ago
14

Give the equation for a circle with the given center and radius. Center at (2, -9), radius = 3

Mathematics
1 answer:
olga2289 [7]2 years ago
8 0

Answer:

B

Step-by-step explanation:

The standard form of the equation of a circle is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (2, - 9) and r = 3, thus

(x - 2)² + (y - (- 9))² = 3², that is

(x - 2)² + (y + 9)² = 9 → B

You might be interested in
Simplify 2(x + y) + 3(x + y). <br> 2xy + 3xy <br> 5xy <br> 5x + 5y
Flauer [41]
2(x + y) + 3(x + y)

first distribute:
(multiply 2 into everything in the first parenthesis, and 3 into everything in the second)
2x + 2y + 3x + 3y
Second simplify (add all like terms (adding in this case) )
(2x + 3x) + (2y +3y)
5x + 5y

your answer is: 5x + 5y

hope this helps
6 0
3 years ago
Read 2 more answers
The 9th graders are selling tickets to raise money for a class field trip. They are selling student tickets for $5 and adult tic
Marina CMI [18]

Answer:

<em>Total number of adult tickets sold = 10</em>

<em>Total Number of Students tickets sold = 30</em>

Step-by-step explanation:

Let x be the number of student tickets sold.

Let y be the number of adult tickets sold.

As per the question statement, total tickets sold are 40.

x +y =40 ...... (1)

Price of each student ticket = $5

Sales from students' tickets = Price of each students ticket \times Number of students tickets sold

Sales from student's tickets = 5 \times x

Price of each adult ticket = $9

Sales from adult's tickets = Price of each adult's ticket \times Number of adult tickets sold

Sales from student's tickets = 9 \times y

Total sales is done by students and adult tickets is $240 as per the question statement.

\Rightarrow 5x + 9y = 240 ......(2)

Solving equations (1) and (2) using elimination method:

Equation (2) - 5 \times (1) :

5x  + 9y -5x-5y = 240-200\\\Rightarrow 4y = 40\\\Rightarrow y =10

Total number of adult tickets sold = 10

Putting y=10 in equation (1):

x+10 = 40\\\Rightarrow x = 30

Total number of students tickets sold = 30

<em>Total number of adult tickets sold = 10</em>

<em>Total Number of Students tickets sold = 30</em>

8 0
3 years ago
A system of inequalities is graphed below. The variable x represents the number of cans someone is buying, and y represents the
8090 [49]
We have that
<span>We will analyze each case to verify the answer
see the attached figure

</span>Point A) 7 cans and 140 bottles------------> (x,y)=(7,140)----> is not solution
Point B) 12 cans and 40 bottles------------> (x,y)=(12,40)----> is not solution
Point C) 8 cans and 120 bottles------------> (x,y)=(8,120)----> is a solution
Point D) 9 cans and 70 bottles------------> (x,y)=(9,70)-------> is a solution

the answer is
the solutions are
<span>8 cans and 120 bottles
9 cans and 70 bottles</span>

6 0
2 years ago
After John worked at a job for 10 years, his salary doubled. If he started at $x, his salary after 10 years is _____.
VARVARA [1.3K]
After ten years his salary is x2
6 0
3 years ago
Read 2 more answers
If 42.8 kg is divided in the ratio 7:2, what is the smaller share?
Snezhnost [94]
<span>The smaller share is equal to 9.51 rounded to 2 decimal places. 
</span>
5 0
3 years ago
Other questions:
  • What's the greatest common factor of 45,9,63
    12·2 answers
  • You are given the system of equations to solve by the elimination method, which is an INCORRECT step that will NOT produce a sys
    6·1 answer
  • How many lines of reflectional symmetry does the regular hexagon have?
    14·1 answer
  • Find the Slope of the Line through each pair of Points : A) ( 8,7) (5 ,-3) B ( -5 ,9) (5, 11) C ( -8 ,4 ) ( -4, -9 ) Remember Sl
    6·1 answer
  • Pls pls pls pls pls pls
    8·1 answer
  • Can somebody help me with this question, my brain has evaporated.
    6·1 answer
  • HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
    12·2 answers
  • A bookshelf is 9 feet wide. A set of mystery books fills 1/6 of the shelf space. Each book in the set is 3/8 inch thick. How man
    10·1 answer
  • Factor the following expression 2x^2 - 11x+12
    5·1 answer
  • I NEED HELP FAST!!!<br> What is the distance between 14,-15 and 10,-7
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!