The ceiling of the whispering gallery of the stautary hall in the united states capitol building can be approximated by a semi ellipse. because of the properties of reflection, the whispering of someone tanding at one focus can be clearly heard by a person standing at th eohter focus. suppose that the distance between the foci is 38.5 feet and the max height of the ceiling above ear level is 37 feet. find the equation of an elliptical cross ection of this gallery.

lol we need to see what the question is asking about

step-by-step explanation:

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

answer is 8 r5

step-by-step explanation: