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3 years ago

5

A tunnel is constructed with a semielliptical arch. The width of the tunnel is 80 feet, and the maximum height at the center of

the tunnel is 30 feet. What is the height of the tunnel 4 feet from the edge? Round your answer to the hundredths place.
4.01 feet
9.37 feet
13.08 feet
29.85 feet

2 answers:

slavikrds [6]3 years ago

7 0

Answer:

Step-by-step explanation:

Example Equation of an ellipse with horizontal major axis with center at (0,0):

x%5E2%2Fa%5E2%2By%5E2%2Fb%5E2=1

For given problem:

b=20

b^2=400

a=30

a^2=900

equation: x%5E2%2F900%2By%5E2%2F400=1

y%5E2%2F400=1-x%5E2%2F900

Vlada [557]3 years ago

7 0

Answer:

4.01 _feet

=29.850

Step-by-step explanation:

Espero averte ayudado :-)

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Evan lives in Stormwind City and works as an engineer in the city of ironforge in the morning he has three Transportation option

denis-greek [22]

Answer:

The probability that he teleports at least once a day = $\mathbf{\frac{5}{9}}$

Step-by-step explanation:

Given -

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P( He not choose teleport in the morning ) = $\frac{2}{3}$

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maria [59]

Answer:

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Second option: $2x^2=6x-5$

Fourth option: $-x^2-10x=34$

Step-by-step explanation:

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$D=b^2-4ac$

1) For $3x^2-5x=-8$ :

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Since $D$ this equation has no real solutions, but has two complex solutions.

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Then:

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Since $D$ this equation has no real solutions, but has two complex solutions.

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