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il63 [147K]
2 years ago
8

What; percent of 400 is 360

Mathematics
1 answer:
Harrizon [31]2 years ago
3 0
X/100 = 360/400
400x +36000    divide by 400
 x=90%


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Write an equation of an ellipse in standard form with the center at the origin and a height of 12 units and width of 19 units.
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Answer:

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Step-by-step explanation:

* Lets revise the equation of the ellipse

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  and major axis parallel to the x-axis is x²/a² + y²/b² = 1  

# a > b  

- The length of the major axis is 2a  

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- The coordinates of the co-vertices are ( 0 , ± b )  

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∵ The center of the ellipse is (0 ,0)

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∴ b = 12/2 = 6 ⇒ ∴ b² = 36

- Lets write the equation in standard form

∵ The equation is x²/a² + y²/b² = 1

∴ x²/(361/4) + y²/36 = 1 ⇒ simplify it

∴ 4x²/361 + y²/36 = 1

* The equation of the ellipse in standard form is 4x²/361 + y²/36 = 1

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Answer:

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Step-by-step explanation:

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