Question

pleaseee help for medal and fan (: posting below

Answer 1

Write an equation of an ellipse in standard form with the center at the origin and a height of 4 units and width of 5 units.

Answer 2

so the equation of elipse is x^2/a^2+y^2/b^2=1
where a is the a is the radius on y (height)
and b is radius on x(width)

Answer 3

wait no theres not an answer for that

Answer 4

x^2/25+y^2/16=1 that should be the answer

Answer 5

nope....theres only one with 4 and 5 or 6.25 and 4

Answer 6

are the 4 and 5 in power of 2?

Answer 7

nope

Answer 8

http://www.mathopenref.com/coordgeneralellipse.html

Answer 9

do you know the standard equation for an elipse?

Answer 10

yes

Answer 11

ok so you know that the equation would simply be x^2/a^2+y^2/b^2=1

Answer 12

now because its asking for a height of 4 and a width of 5, we can assume the height can means the y axis and the width is the x axis

Answer 13

now you plug in width as the variable under x, height as the variable under y and you get the answer

Answer 14

these are the answer choices \[\frac{ x^2 }{ 4 }+ \frac{ y^2 }{ 5 }= 1 ,\frac{ x^2 }{ 6.25 }+\frac{ y^2 }{ 4 }=1\]

Answer 15

no remember that the variables must be squared

Answer 16

well both of these are wrong , should be x^2/25+y^2/16=1

Answer 17

exactly

Answer 18

so the final equation should be x^2/25+y^2/16=1

Answer 19

or \[\frac{ x^2 }{ 5 }+ \frac{ y^2 }{ 4}= 1, or \frac{ x^2 }{ 4}+\frac{ y^2 }{ 6.25 }=1\]

Answer 20

well you guys have to be wrong because theres not an answer for that

Answer 21

well the correct answer is x^2/5^2+y^2/4^2=1, so im guessing the first one is closer, though still wrong

Answer 22

do you know if thats right timo? haha