An underground mine elevator descends 12% of the total depth every minute. The total depth of the elevator is 75 meters below the ground. How many meters below the ground is the elevator after 2 minutes?

Step-by-step explanation:

"An underground mine elevator descends 12% of the total depth every minute. The total depth of the elevator is 75 meters below the ground. How many meters below the ground is the elevator after 2 minutes?"

We want to estimate the depth after certain number of time

Given

total depth=75m

rate of descends =12% of total depth

= 12/100*75= 0.12*75

=9 meters per minute

Therefore in 2 minutes we can use the expression to find the distance/depth

speed= distance/time

9=distance/2

distance=9*2

distance= 18 meters

Therefore the elevator is 18m below the ground in 2 minutes

true? is that what you're asking or do you mean something else?

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.