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
trasher [3.6K]
3 years ago
10

Match the following equations with the conic sections formed by them. 1. x 2 + y 2 - 4x + 6y - 5 = 0 hyperbola 2. x 2 - 6y = 0 c

ircle 3. 4x 2 + 9y 2 = 1 ellipse 4. 7x 2 - 9y 2 = 343 parabola
Mathematics
1 answer:
REY [17]3 years ago
7 0
<span>1. circle
 2. parabola
 3. ellipse
 4. hyperbola
   Let's look at each equation and see what they are:
   1. x^2 + y^2 - 4x + 6y - 5 = 0
 * There's a lot of crud in this equation, but the thing to note is that the x^2 and y^2 terms have the same scaling factor (which is 1). This should scream "circle" to you.

   2. x^2 - 6y = 0
 * Key thing to note here is that the y term isn't squared, but the x term is squared. This is a key sign that the equation is a parabola.

   3. 4x^2 + 9y^2 = 1
 * Here we have the sum of an x squared term and a y squared term. That kinda sounds like a circle, but there's those 2 coefficients scaling the results. And they're different. So we're looking for a closed curve that kinda looks like a circle, but it's stretched out a bit. And that's an ellipse.

   4. 7x^2 - 9y^2 = 343
* Here we have a couple of squared terms for x and y. But we're not adding them together, we're subtracting. And that indicates a hyperbola.</span>
You might be interested in
F(x). = x3+2x2+9x+18 find all zeros and use synthetic division
prisoha [69]
F(x)= (x-2) (x2-9) = (x-2)(x-3)(x+3)
8 0
2 years ago
Find BD. Please guys I need help
GarryVolchara [31]

Answer:

BD = 10

Step-by-step explanation:

B --> -4

D --> 6

-4 + BD = 6

BD = 10

8 0
3 years ago
I'M IN A TEST!!!! PLEASE HELP BUT PLEASE DON'T GUESS!!!!
max2010maxim [7]

Answer:

325 animals

Step-by-step explanation:

All you have to do is add all of the animals together.

85+70+65+60+45= 155+125+45=155+170=325 animals

If this helps please mark as brainliest

5 0
2 years ago
Read 2 more answers
An automobile tire has a diameter of about 1.7. What is the circumference
lilavasa [31]
Answer:

r = 0.85 ft
C = 5.3407075111026 ft
A = 2.2698006922186 ft²

Agenda:

r = radius
C = circumference
A = area
π = pi = 3.1415926535898
<span>√ = square root
</span>
Formula:
Circumference of a circle:

C = 2πr = πd

3 0
3 years ago
What percent of 80 is 90
Serhud [2]

\text{What percent of 80 is 90?}\\\\\text{Calculate what fraction of the number 90 is 80}\\\\\dfrac{80}{90}=\dfrac{8}{9}\\\\\text{Convert it to percent}\\\\\dfrac{8}{9}\cdot100\%=\dfrac{800}{9}\%=88\dfrac{8}{9}\%\\\\Answer:\ \boxed{80\ is\ 88\dfrac{8}{9}\%\ of\ 90}

8 0
3 years ago
Other questions:
  • Yoon buys a box of markers for $2.85, but he has a coupon for 20% off. How much does he save with the coupon?
    7·1 answer
  • Ten granola bars and 12 bottles of water cost $23. Five granola bars and four bottles of water cost $10. How much do one granola
    7·2 answers
  • Simplity<br> 9(2.6x + 5y + 5.6x)
    12·1 answer
  • AlgebrA complex roots
    14·1 answer
  • use the points a(2, 3) and b(2, −5). complete the description of segment ab and find its length. then describe the image of segm
    8·1 answer
  • Find the expected value of the random variable. Round to the nearest cent unless stated otherwise. Suppose you buy 1 ticket for
    9·1 answer
  • A coke can and a monster can are each in the shape of a right circular cylinder. The cans have the same radius but the height of
    7·1 answer
  • Simplify 4(7-10)^/(-6)-5*(-2)
    5·1 answer
  • An amusement park sales child and adult tickets at a ratio of 8:1 on Saturday they sold 147 more child tickets than adult ticke
    13·1 answer
  • The number line shows the graph of an inequality:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!