The travers are adding a new to their house. the room will be a cube with a volume 8,000ft cubed. they are going to put hardwood floors, and the contractor charges 10$ per square foot. how much will the hardwood floor cost?

The answer to your question is: cost = $4000

Step-by-step explanation:

Data

Volume = 8000 ft³

cost = $10 / square foot

Process

It's a  cube then we find the length of one side

Volume = l³ = 8000

                l = ∛8000

                I = 20 ft

Now, calculate the area of the floor,

Area = l x l

        = 20 x 20

        = 400

Finally, find the cost of the floor

cost = area x price

cost = 400 x 10

       = $4000

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

~

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0