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
Simora [160]
3 years ago
12

Using the following equation, find the center and radius of the circle. You must show all work and calculations to receive credi

t.
x2 − 4x + y2 + 8y = −4 (10 points)
Mathematics
1 answer:
Oxana [17]3 years ago
8 0

Answer:

Center: (-2, 4)

Radius: 4

Step-by-step explanation:

To find the centre and radius, we require to identify g , f and c

By comparing the coefficients of 'like terms' in the given equation with the general form.

2g = 4 → g = 2 , 2f = -8 → f = -4 and c = 4 → center=(−g,−f)=(−2,4)

radius = √22+(−4)2−4= √4+16−4=4

Center: (-2, 4)

Radius: 4

Hope This Helps! :)

You might be interested in
2.
Gnesinka [82]

Answer:

C. –x + 8y = 56

Step-by-step explanation:

Write in standard form.

x  −  8 y  =  − 56

This is a linear function in the slope - intercept form:

y = m x + b and we need a standard form:

a x + b y = c

y = 1/8 x + 7   / * 8 ( we will multiply both sides of equation by 8 )

8 y = x + 56

- x + 8 y = 56  / * ( - 1 )

x - 8 y = - 56

The equation is  y = 1/8x + 7

Standard form equation is Ax + By = C,  where A > = 0.

First eliminate the fractions by multiplying the equation by 8

8y = x + 56

Subtract x from each side

-x + 8y = 56

SInce x coeficient can't be negative multiply the equation by negative one.

x - 8y = -56

4 0
3 years ago
This is due by 7pm i need help
Ad libitum [116K]

Answer:

bruh u need a link

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Suppose you are driving to visit a friend in another state. You are driving at an average rate of 50 miles per hour. You must dr
bagirrra123 [75]
The answer should be 3 hours and 45 minutes if i did the math in my head correctly

5 0
3 years ago
ANSWER PLEASE !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!
9966 [12]

Answer:

62 degrees

Step-by-step explanation:

First, it is important to note that all three angles in a triangle add up to be 180 degrees, and if you draw a straight line extending off the side of a triangle, the outside angle and the inside angle are supplementary (they add to be 180 degrees). So,(3x+3)+(2x+4)-180=measure angle F, and 180-(7x-5)=measure angle F according to the rules respectively. Since both of these equations are equal (they both equal the measure of angle F) we can set them equal to each other to find the value of x=> 180-(7x-5)=(3x+3)+(2x+4)-180=> 180-7x-5=3x+3+2x+4-180. Now combine like terms=>175-7x=5x-173. Now, add 7x to both sides and add 173 to both sides to get the variables on one side of the equation=> 175+173-7x+7x=5x+7x-173+173 (the 7x and -7x on the left side and the 173 and -173 on the right side cancel out) =>348=12x. Divide both sides by twelve to find x=> 29=x. Now, plug 29 into what is given for angle FDE=> 2(29)+4=

58+4=

62 degrees

5 0
3 years ago
In a sale, a clothes shop reduces its prices by 40%
bazaltina [42]
The original price of the shirt is 22
The price was reduced by 40% = 22*40/100 = 8.8
The price after sale = 22.0 - 8.8 = 13.2
4 0
3 years ago
Other questions:
  • What is a factor of 21x² + 13x - 20
    14·1 answer
  • A pole tilts toward the sun at a 12° angle from the vertical, and it casts a 20-foot shadow. The angle of elevation from the tip
    6·2 answers
  • A statistical survey found that 20% of cars are red, and 10% are electric cars. It was further discovered that of all cars that
    10·1 answer
  • What is the greatest common factor (GCF) of 48 and 56? A. 168 B. 8 C. 4 D. 336
    10·2 answers
  • 4. What is the GCF of xy10,x4y6, x'y', and x10y10?<br>A. ху<br>B. хуб<br>С. x+y+<br>D. x+y6​
    11·1 answer
  • John Johnson’s gross pay for this week is $520.95. He is single and claims one withholding allowance. What amount will be withhe
    10·2 answers
  • find how long it will take for an investment sum of $40000 to generate simple interest of $8000 at 5% per annum​
    9·1 answer
  • HELP ASAP ASAP!! NO LINKS PLEASEEEE OR U WILL BE REPORTED, I NEED AN ANSWER, WILL GIVE BRAINIEST!!
    5·1 answer
  • Can sum one help me please
    8·2 answers
  • 6.702 rounded to 3 dp
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!