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
elena-s [515]
2 years ago
8

PLZ HELP ASAP Geometry help: 2x^2 + 2y^2 - 8x +10y +2=0

Mathematics
1 answer:
Alexxx [7]2 years ago
6 0
Ok so this is conic sectuion
first group x's with x's and y's with y's
then complete the squra with x's and y's


2x^2-8x+2y^2+10y+2=0
2(x^2-4x)+2(y^2+5y)+2=0
take 1/2 of linear coeficient and square
-4/2=-2, (-2)^2=4
5/2=2.5, 2.5^2=6.25
add that and negative inside

2(x^2-4x+4-4)+2(y^2+5y+6.25-6.25)+2=0
factor perfect squares
2((x-2)^2-4)+2((y+2.5)^2-6.25)+2=0
distribute
2(x-2)^2-8+2(y+2.5)^2-12.5+2=0
2(x-2)^2+2(y+2.5)^2-18.5=0
add 18.5 both sides
2(x-2)^2+2(y+2.5)^2=18.5
divide both sides by 2
(x-2)^2+(y+2.5)^2=9.25

that is a circle center (2,-2.5) with radius √9.25

You might be interested in
Can someone please help me??
babunello [35]
I'll help on 12. You know that 5*5 is 25. therefore what times 5 equals 20? 
3 0
3 years ago
HELP! What is the radius and diameter of this circle?
dem82 [27]

Answer:

Step-by-step explanation:

the diameter is the measurement that is all the way across the circle which is given to you so the diameter is 7cm. To find the radius it is half the way across the circle so it is half the diameter so in this case the radius would be 3.5cm

8 0
3 years ago
If a large sized pizza of diameter 35 cm is kept on a rectangular base of dimensions 50 cm x 60 cm. Find the area of the base ex
Yuki888 [10]

Answer:

2037.89

Step-by-step explanation:

The area of a circle is πr²

This means that the area of the pizza is π*17.5^2

This means that the area =962.11275016187

We then need to find the area of a rectangle which is shown throuhg lenght*width

50*60=3000

We then need to find out the area of the box excluding the pizza so we subtract the area of a pizza

so we have

3000-962.11275016187=2,037.88724983813

Round and get 2037.89

7 0
3 years ago
Evaluate the expression 7^2/x^2-2 for x =3
Elan Coil [88]

Answer:

7^2/x^2-2 for x =3

49/9-2

49/7

7

answer is 7

Step-by-step explanation:

8 0
3 years ago
a snack that reginald just bought has 150 calories in 3/4 of a serving. how many calories per serving is this?
77julia77 [94]
If there are 150 calories in 3/4 servings divide 150 by 3 and you get 50 ..you add 50 calories for the 1/4 servings which gives you 200 calories per serving
5 0
3 years ago
Other questions:
  • What is the solution to the equation log2 (5x - 2) = 3?
    15·1 answer
  • A group of tourists spends $156 to rent snorkels and fins. A total of 15 snorkels and 18 pairs of fins are rented. Renting a sno
    10·2 answers
  • Probability of being a boy in this class is 1/3 and there are 12 girls. Find the total
    12·2 answers
  • You are playing a game of Scrabble and have the 5 A tiles, 3 E tiles, 1 Z tile, 2 M tiles, 3 L tiles, and 1 Y tile to choose fro
    9·2 answers
  • Give your opinion about young generation! with the right structure.
    12·1 answer
  • Jewel wanted to know if there was a correlation between the weight of a dog and its age. She collected data and created the scat
    15·2 answers
  • 3y+4y+6=20 solve variable. include steps, also check your answer!
    15·1 answer
  • you buy a new mountain bike for $200. tha value of the bike decreases by 25% each year. how much is your bike worth after 3 year
    14·1 answer
  • The temperature fell 4 degrees in the last hour. Now it is 21 degrees. Write an equation to find the temperature it was 1 hour a
    12·1 answer
  • Pls help and answer what Y=
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!