Awhale descends 382.5 feet in 45 seconds. write an expression that can be used to find the average elevation change of the whale during its descent in, in feet per second.

The expression that can be used to find the average elevation change of the whale during its descent in, in feet per second is s =  8.5t

The formula for average elevation in feet per second is the speed of the whale in feet per seconds

Given the following parameters

Distance = 382.5 feet

Times = 45 seconds'

Calculate the speed

Speed = Distance/Times

Speed = 382.5/45

Speed = 8.5ft/s

Recall that s = d/t

d = st

s = 8.5t

Hence the expression that can be used to find the average elevation change of the whale during its descent in, in feet per second is s =  8.5t

Learn more here: link

Part a) The expression is  

Part b) -51 feet

Step-by-step explanation:

The complete question is

A whale descends 382.5 feet in 45 seconds.  

The whale's elevation changes at a constant rate.

Part a) Write an expression that can be used to find the average elevation change of the whale during its descent in feet per second

Part b) What is the elevation change of the whale after 6 seconds?

Part a)

we know that

Find out the unit rate

To find out the unit rate divide the total elevation by the total time

Remember that

The sea level represent the level zero

If a whale descends, then the elevation is negative (below the sea level)

so

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form

or

Let

x ----> the time in seconds

y ----> the elevation in feet

In this problem we have a proportional relationship, because the line passes through the origin (For x=0, y=0)

so

The value of the constant of proportionality k is equal to the unit rate or slope of the linear equation

substitute

Part b) For x=6 sec

substitute in the linear equation

the most boring thing ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.

what are you doing do you need examples of variable questions?

step-by-step explanation:

5a-1=9               bring the one over the =

5a=10                     divide by your variable

a=2

brainliest? ?

here try this one

3a-24=0