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]
2 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]2 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
Which value of x makes the numerical sentence true? 25^ 1/2 × 5 ^–3 = 5 ^x
Elenna [48]
5^-3=0.008
1/2=0.5
0.5*0.008=0.004
5/0.004=1250
5 0
3 years ago
Read 2 more answers
. Keisha and her mom are at the grocery store. Keisha's mom allows her to buy a 2 pound bag of candy. Keisha can choose gummy wo
andriy [413]

Answer:

She can buy 0.8 cents worth of Gummy worms and 1.2 cents worth of sour patches

Step-by-step explanation:

Keisha is allowed to buy only 2 pounds bag of candy.

Now, she can choose either gummy worms or sour patches.

Gummy worms are 0.4 cents per pound while sour patches are 0.6 cents per pound.

Thus, maximum amount she can spend on gummy worms is; 0.4 × 2 = 0.8 cents

Maximum she can spend on sour patches is; 0.6 × 2 = 1.2 cents

She can buy 0.8 cents worth of Gummy worms and 1.2 cents worth of sour patches

8 0
3 years ago
How do I workout/find the unknown angles please
Cerrena [4.2K]

Answer: x = 135 degrees and y = 225 degrees.

Step-by-step explanation: To solve this problem we first use the equation (n-2)*180 [n being the number of sides] to find the sum of interior angles in the figure. We plug the values in: (8-2)*180 = 6*180 degrees = 1080 degrees. We divide this by 8 to get the measure of an interior angle: 1080 degrees/8 = 135 degrees. Since all the interior angles of a regular polygon are congruent, we can say that angle x + angle y = 360 degrees. Thus subtract x degrees from 360 degrees to get y: 360 degrees - 135 degrees = 225 degrees. Therefore, x = 135 degrees and y = 225 degrees.

6 0
2 years ago
I need help please I need it
SashulF [63]

Step-by-step explanation:

It asks you to choose values for w, the width, and evaluate the equation for each. It describes the constraint "the perimeter of 20 units" The perimeter of a rectangle is the length of all the lines of a regtangle.

Or

2L + 2W = 20 reduce this to simplest for by dividing both sides by 2;

L + W = 10, so the length plus the width is 10. Rearrange it to be W = 10 - L. Values of W can range from 1 to 9. Now sove for a few points in the function.

f(W) = 10W - W^2

3; 10(3) - 3^2 = 30 - 9 = 21.

If we look at the constraint, L = 10 - W, when the width is 3 the length must be 7. The area of a rectangle is L x W, 3 x 7 = 21. That checks against the function.

Solve for additional points.

4; 10(4) - 4^2 = 40 - 16 = 24.

If W is 4 the L is 6 and 4 x 6 = 24

4 0
3 years ago
Will somebody give me a hand
erica [24]
Area = π × r2. Or, when you know the Diameter: A = (π/4) × D2. So A = 6π, which is 18.85. So A = 18.85. And here's the hand.

3 0
2 years ago
Other questions:
  • For what x-value(s) does sin(x) = -1?
    15·1 answer
  • Find the missing number<br> 48/6 = ?/24<br> 144<br> 192<br> 88<br> 96
    9·2 answers
  • Which describes the amount of product a seller is able to make?
    15·1 answer
  • Help pleaseeeeeeeeeeeeeeeeeee
    15·2 answers
  • Which of the following is the final step in bisecting a line segment? (5 points)
    10·1 answer
  • How do I solve this inequality?
    5·1 answer
  • The Chimera Ant population is 7,500 and grows 3% each year. What will the population be after 3 years.
    14·1 answer
  • there are red, green and blue sweets in a bag, the ratio is 1:4:7 there 120 green sweets.how many sweets in total.
    8·2 answers
  • Hello I might seem but what is (r35) + x -89+(r34)
    14·2 answers
  • NO FILES NO LINKS ASAP
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!