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
Dahasolnce [82]
3 years ago
6

This hyperbola is centered at the origin. Find its equation. Foci: (-9,0) and (9,0) Vertices: (-2,0) and (2,0)

Mathematics
1 answer:
pashok25 [27]3 years ago
6 0

Answer:

Step-by-step explanation:

focus distance=9

a=2 f²=a²+b² ==> b²=9²-2²=77 ==> b=√77

\dfrac{(x-0)^2}{2^2}- \dfrac{(y-0)^2}{77}=1\\\\\\\boxed{\dfrac{x^2}{4}- \dfrac{y^2}{77}=1}\\

You might be interested in
Which is greater 14 ounces or 0.4 kilograms
AnnZ [28]
14 ounces is about .39 kilograms. So 14 ounces is greater than .4 kilograms
6 0
4 years ago
There are 400 bears in the woods and their number is decreasing by 5% per year how many bears will there be in five years?
grandymaker [24]

Answer:

300 bears left

Step-by-step explanation:

400 x 0.05 is 20. 20 is how many will be gone in one year. 20 x 5 is 100. 100 is how many will be gone in 5 years.

400 - 100 is 300. Hope this helps, please tell me if i am wrong

5 0
3 years ago
Read 2 more answers
A bag contains 75 marbles some red some blue the ratio of red marbles to blue marbles is 3 to 2 how many red marbles are there
Over [174]
The correct answer is 45
6 0
2 years ago
Read 2 more answers
The original price for a case of paper is $12.88. The case of printer paper is on sale for 0.5 times the original price. How muc
loris [4]

divide the original price by 2 since it is half off. that gives you 6.44. so you would multiply 6.44 by 5, since allison wants 5 cases. that gives you 32.20 dollars

6 0
3 years ago
Write each complex number in rectangular form.
hram777 [196]
Hello,

A)
cos 135°=- cos 45°=-√2/2
sin 135°=sin45°=√2/2
2(cos 135°+i sin 135°)=-√2 + i*√2

B)
cos 120°=-cos 30°=-√3 /2
sin 120°=sin 30°=1/2

3(cos 120° + i sin 120)=-3/2*√3 +i*3/2

C)
cos (5π/4)=-cos (π/4)=-√2 /2
sin (5π/4)= -sin(π/4)=-√2 /2
5(cos (5π/4)+i sin (5π/4))=-5/2*√2 +i *5/2*√2

D)
cos(5π/3)=cos(π/3)=√3 /2
sin (5π/3)=-sin(π/3)=-1/2

4(cos(5pi/3)+i sin (5pi/3))
=2√3- 2*i


4 0
3 years ago
Other questions:
  • How do I solve r+11+8r=29
    5·1 answer
  • As a salesperson, you are paid $92 per week plus $4 per sale. This week you want your pay to be at least $200. Write an inequali
    7·1 answer
  • Kevin says that lines p and m will eventually intersect.
    5·2 answers
  • What is the answer for 76÷85,120 when you estimate
    15·1 answer
  • The graph models a rock being thrown. What is the interval of decrease?
    5·1 answer
  • 1. Chapter ma2pe08r, Section .72, Problem 012 (ID: 012.07.2 - MC - MANK08) David tunes pianos in his spare time for extra income
    12·1 answer
  • How do I do this?????
    14·1 answer
  • Given the right triangle below what is x?
    10·1 answer
  • 7/8 ÷1 1/2=? <br><br><br> I need help
    14·1 answer
  • Write the expression in radical form.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!