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
Galina-37 [17]
3 years ago
15

How to classify this conic ecwation 4x^2+9y^2-54y-63=0

Mathematics
1 answer:
MArishka [77]3 years ago
6 0
This looks like an ellipse.
Complete the square for y: 9(y²-6y-7)=9(y²-6y+9-9-7)=9((y-3)²-16).
Rewrite the equation:
4x²+9(y-3)²-144=0; 4x²/144+9(y-3)²/144=1; x²/36+(y-3)²/16=1.
Standard equation of an ellipse is (x-h)²/a²+(y-k)²/b²=1, where (h,k) is the origin or centre.
This is the equation of an ellipse with centre (0,3), a=6 and b=4 (semimajor and semiminor axes).
You might be interested in
What's the answer to this one problem thanks
Firlakuza [10]
The correct answer to this problem is D.
4 0
3 years ago
Read 2 more answers
HELP PLEASE!! Function G is a transformation of the parent exponential function. Which STATEMENTS are true about function g.
seraphim [82]

Answer:

c. function g has A y intercept of (0,4)

8 0
2 years ago
I have to find the circumference of 15 cm​
Pie

Answer:

r = 2.39 and C=2πr=2·π·2.39≈14.99997

Step-by-step explanation:

Using the formula

C=2πr

Solving for r=C 2π=15

2·π≈2.38732

and then u round up the 7 told the 8 to go up.

2.39

7 0
3 years ago
What’s 25.41 divided by 33? I need to see work because I don’t get it
Trava [24]

plz do mark as branliest


3 0
3 years ago
How many square yards of cement are needed to create the walkway around the rectangular pool?
sveticcg [70]
I would first cut off the ends that make a trapezoid and then find the area of the trapezoids and the area of the rectangles.
A trap = (1/2) * h *(b1 + b2)
A rect = L * W
A trap = (1/2) 4 * (6 + 14)
A = (1/2) * 4 * 20
A = 40 (there are 2 trapezoids) 40 * 2 = 80 yds^2
A rect = L * W
A = 12 * 4
A = 48 (there are 2 rectangles) 48 * 2 = 96 yds^2
80 + 96 = 176 yds^2
3 0
3 years ago
Read 2 more answers
Other questions:
  • In the year 2015, the population of bats was 300,000. The population is decreasing by 1/2 each year. In what year will the popul
    13·1 answer
  • Will give brainlest worth 20 points
    5·1 answer
  • Which equation could be used to find the length of the hypotenuse?<br>​
    12·2 answers
  • What is the volume of a cone with a radius of 6 cm and a height of 12 cm? Use 3.14 for pi. Round your answer to the nearest hund
    5·1 answer
  • Janice can ride her bike 4 miles in 30
    5·1 answer
  • Find 0. Round to the nearest degree.<br><br> A. 21°<br> B. 20°<br> C. 69°<br> D. 70°
    9·2 answers
  • Describe a sequence ​
    10·1 answer
  • For a segment of a radio show a disc jockey can play 8 records. If there are 10 records to select from, in how many ways can the
    8·1 answer
  • If q||r, solve for x.
    9·1 answer
  • A ladder is 50 ft and cast a 25 ft shadow Mark is 6 ft tall how long would his shadow be​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!