An arch in the shape of the upper half of an ellipse is used to support a bridge that is to span a river 20 meters wide. The height of the arch is 6 meters above the center of the river. Write an equation for the ellipse in which the x-axis coincides with the water level and the y-axis passes through the center of the arch.

Title:

Step-by-step explanation:

The standard form of an ellipse is .

The span of the river is 20 meters. As per the given condition, y-axis will pass through the middle point of the river. That is why, the value of a will be .

Since the height of the arc is 6, the value of b is 6.

The equation of the arc will become .

24

step-by-step explanation:

if it takes 8 pounds to make 12 divide 12 by 8 and you get 1.5, 1.5 x 16 = 24

ok then what happened.