Ahelicopter picks up stranded tourists in a national park that is 34.5
meters below sea level. the helicopter increases it's altitude by 56.8
meters. what is the helicopter's cruising altitude?

The helicopter's cruising altitude is 22.3m

Step-by-step explanation:

0-34.5=-34.5

-34.5+56.8=22.3

Hope this helps :D

m∠vru = 80°

m∠urw = 15°

step-by-step explanation:

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