Awooden plaque is in the shape of an ellipse with height 30 centimeters and width 22 centimeters. find an equation for the ellipse and use it to find the horizontal width, in centimeters, of the plaque at a distance of 4 centimeters above the center point.

Explanation:

height of Ellipse  

i.e.

Width of Ellipse

i.e.

Equation of a vertical Ellipse is

at

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the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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