1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natulia [17]
3 years ago
10

A submarine on the surface of the ocean descended at a rate of 7 feet per second for 2 minutes. Then it ascended at a rate of 4

feet per second for 3 minutes, Finally, it descended at a rate of 9 feet per second for 5 minutes.
What was the final elevation of the submarine?
Mathematics
2 answers:
kotykmax [81]3 years ago
8 0

Answer:

4,260 feet below sea level (-4,260 feet)

Step-by-step explanation:

The submarine starts at sea level which should be 0 for elevation. And descending 7 feet per second for 2 minutes which means it went down 840 feet ( 7x60x2). Then 4 feet per second for 3 minutes which is 720 feet (4x60x3). Lastly 9 feet per second for 5 minutes which is 2,700 feet (9x60x5). Then you add up those three totals, 840 + 720 + 2,700 = 4,260. So the elevation is -4,260 feet, or 4,260 feet below sea level

aleksandr82 [10.1K]3 years ago
4 0

Answer:

I believe the answer is 2,820 feet.

Step-by-step explanation:

First, you would need to multiply 60 by however many minutes to see how many seconds there are.

Second, multiply the number of feet by the seconds you found from the first step.

Lastly, add together the two descending part. Then subtract it from the ascending part.

  1. 7 x 120 = 840
  2. 4 x 180 = 720
  3. 9 x 300 = 2700
  4. 2,700 + 840 = 3,540 - 720 = 2,820 is the answer
<h2>MARK ME BRAINLIEST PLEASE!!!!!!</h2>

You might be interested in
Yesterday, Joe had $376 in his bank account. Today, Joe noticed his account had a balance of -$523. Joe realized that he spent m
Phantasy [73]
Joe overspent D. $899
7 0
4 years ago
The slope of the line is m=3/4. One point is (x, 2) and (3,-4)<br> Find X
Viktor [21]

Answer:

x is 11

Step-by-step explanation:

We know the slope (3/4) and a point (3,-4), so we can use point-slope form (y-y1=m(x-x1)

Substitute the numbers into the equation

y--4=3/4(x-3)

simplify

y+4=3/4(x-3)

do the distributive property

y+4=3/4x-9/4

subtract 4 from both sides

y=3/4x-25/4

this is the equation of the line.

Since it says that (x,2) is a point in the equation, we can substitute it into the equation

2=3/4x-25/4

add 25/4 to both sides

33/4=3/4x

multiply by 4/3

11=x

we can double check by plugging (11,2) into the equation of the line.

2=3/4(11)-25/4

2=33/4-25/4

2=2

it works! :)

Hope this helps!

7 0
3 years ago
2x+y=3<br>x-y= 1<br><br>solve the equation ​
svetlana [45]

Answer:

x = 4/3

y = 1/3

Step-by-step explanation:

System of equations! This is set up really well to make the second equation equal x then substitute.

x - y = 1

x = 1 + y

and then our substitution:

2 (1+y) + y = 3

and solve:

2 + 2y + y = 3

3y + 2 = 3

3y = 1

y = 1/3

And now we can substitute that value into one of our equations:

x - (1/3) = 1

x = 4/3

Next we should check by substituting these values into both of our equations:

2 (4/3) + (1/3) = 3

9 / 3 does equal 3 !

(4/3) - (1/3) does equal 1 !

Therefore, x = 4/3 , and y = 1/3

4 0
3 years ago
Read 2 more answers
For year y, the population of massachusetts was approximately what percent of the population of vermont?
kifflom [539]

Answer: 50%

Step-by-step explanation:  50%

5 0
2 years ago
You had 15 text messages, deleted 2 then got 5 more, you responded to 4,
Law Incorporation [45]

Answer:   The answer is C


Step-by-step explanation:  15 - 2 = 13     13+5=18




Hope this helps :)


8 0
4 years ago
Other questions:
  • 2x+y=-2
    7·1 answer
  • Aldo bought 22 pounds of sugar for $11. how many dollars did he pay per pound of sugar?
    6·1 answer
  • Two runners are saving money to attend a marathon. The first runner has $112 in savings, received a $45 gift from a friend, and
    13·2 answers
  • kest kuy is offering a sale on its laptop computers with a 20 percent discount off its original price. there is 8% sales tax add
    14·1 answer
  • Ignore 22. Only 20 and 21
    9·1 answer
  • To get to work each morning, Emily takes a horse 10.98 kilometers and a bike 4.06 kilometers.
    13·1 answer
  • Like i said, I am not good at math what so ever. I hate to waste your time but...
    10·1 answer
  • Which is the net force acting on a 1.7-kg object that is accelerating at 5.0 m/s??
    14·1 answer
  • Evaluate 4.68 + 2.7 + 13.289
    9·2 answers
  • What is the measure of ∠B?<br><br>A is 28 degrees<br><br>C is 36 degrees
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!