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
natka813 [3]
3 years ago
6

Find the center and radius of a circle defined by the equation x^2+yy^2+4x-8y+13=0

Mathematics
1 answer:
gogolik [260]3 years ago
8 0
Hello : 
x²+y²+4x-8y +13 = 0
(x² +4x) +(y² -8y )+13 = 0
(x²+4x+4) -4 +(y-8y +16) -16 +13 = 0
(x+2)² +(y -4)² = 7
the center is : (-2 , 4) and radius <span>√7</span>
You might be interested in
Could you please help me with number
Anarel [89]
Too blury,take a good pic
6 0
3 years ago
Joel is using a recipe to make cookies for a club bake sale.
olasank [31]

Answer:

3/4 cups → 1 batch

x cups    → 2 batches

x = 2(3/4) = 6/4 = 1 1/2 cups

 

3/4 cups → 1 batch

y cups → 9 batches

y = 9(3/4) = 6 3/4 cups

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A and B have coordinates –2 and 10 on a number line. If it is marked off into 10 congruent segments, which one of the following
Rasek [7]
Your answer will be D
8 0
4 years ago
Read 2 more answers
The cheetah is the fastest land animal, capiable of attaining a speed of 110 km/h. In August 2009 , the world record for the men
lozanna [386]

Answer:

About 3 times faster

Step-by-step explanation:

Cheetah's speed = 110 km / hr

World 100m sprint record :

Speed of sprinter :

Distance / time

100 m / 9.58s

= 10.438413 m/s

Convert Cheetah's speed to m/s

110 km/hr = (110 * 1000)m / (60 * 60 s)

= 110000 m / 3600 s

= 30.55555 m/s

Number of times cheetah is faster than sprinter :

30.55555 m/s ÷ 10.438413 m/s

= 2.927 times

5 0
3 years ago
There are 1500 students in a school. 65% are girls. How many girls are there in the school?
bonufazy [111]

Answer:

975 girls

Step-by-step explanation:

To find 65% of 1500, multiply 1500 by .65 (to convert percentages to decimals, just move a decimal point over two spaces).

1500*.65=975

You can check that this answer is right with logic. Most of the students will be girls (more than 50%) and 975 makes up most of 1500.

Someone else asked this same question a while ago, and you can find their explanation here brainly.com/question/969975

4 0
3 years ago
Read 2 more answers
Other questions:
  • Kaylee is painting a design on the floor of a recreation room using equilateral triangles. She begins by painting the outline of
    10·1 answer
  • What is the whole number of 7/2?
    14·2 answers
  • Tim is a first grader and reads 33 words per minute. assuming he maintains the same rate, use the double number line to find how
    5·1 answer
  • Make the following changes to the number 5.376:
    11·1 answer
  • If the height and base of the parallelogram shown are each increased by 1 cm, what is the area of the new parallelogram? A paral
    9·2 answers
  • Find a8 of the sequence 10,9.75,9.5,9.25,
    15·2 answers
  • Quick does anyone know this please give me the right answer ( this is due in 20 minutes)
    15·2 answers
  • Help will give points
    10·1 answer
  • Write the equation in slope-intercept form.<br> 6x – 3y = -18
    11·1 answer
  • Fuel for the reasearch vessels will be stored in a cylindrical tank with a radius of 10 meters and a height of 5 meters. Using a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!