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
ch4aika [34]
4 years ago
8

the ocean covers 71% of the earth's surface.if the total surface area of the earth is about 510 million square kilometers,how ma

ny square kilometers are covered by the ocean?
Mathematics
2 answers:
Brut [27]4 years ago
8 0

It needs to be converted to feet

Paladinen [302]4 years ago
6 0
About 360 <span>million square kilometers</span>
You might be interested in
Please help me with this homework
Natalka [10]

Answer:

one solution

Step-by-step explanation:

good luck have a nice day

8 0
3 years ago
I need help plzzzz answer quick
Travka [436]

Answer:

what do you do, help

Step-by-step explanation:

4 0
3 years ago
Please help Ladder question!!
PIT_PIT [208]

Answer:

Step-by-step explanation:

This is a related rates problem from calculus using implicit differentiation. The main equation is going to be Pythagorean's Theorem and then the derivative of that. Pythagorean's Theorem is

x^2+y^2=c^2 where c is the hypotenuse and is a constant. Therefore, the derivative of this with respect to time, and using implicit differentiation is

2x\frac{dx}{dt}+2y\frac{dy}{dt}=0 and dividing everything by 2 to simplify a bit:

x\frac{dx}{dt}+y\frac{dy}{dt}=0. Upon analyzing that equation, it looks like we need values for x, y, \frac{dx}{dt}, and \frac{dy}{dt}. And here's what we were given:

\theta=45 and \frac{dx}{dt}=.5  In the greater realm of things, that's nothing at all.

BUT we can use the right triangle and the angle we were given to find both x and y. The problem we are looking to solve is to

Find \frac{dy}{dt} at the instant that \frac{dx}{dt} = .5.

Solving for x and y:

tan45=\frac{x}{6} and

6tan45 = x ( and since this is a 45-45-90 triangle, y = x):

6(\frac{\sqrt{2} }{2})=x=y so

x=y=3\sqrt{2} and now we can fill in our derivative. Remember the derivative was found to be

x\frac{dx}{dt}+y\frac{dy}{dt}=0 so

3\sqrt{2}(\frac{1}{2})+3\sqrt{2}\frac{dy}{dt}=0 and

\frac{3\sqrt{2} }{2}+3\sqrt{2} \frac{dy}{dt}=0 and

3\sqrt{2}\frac{dy}{dt}=-\frac{3\sqrt{2} }{2} and multiplying by the reciprocal of the left gives us:

\frac{dy}{dt}=-\frac{3\sqrt{2} }{2}(\frac{1}{3\sqrt{2} }) so

\frac{dy}{dt}=-\frac{1}{2}\frac{m}{s}

8 0
3 years ago
If Aditya can travel 80 km in 2 hours how many kilometres can he travel in 3 and half hours​
ivann1987 [24]

Answer:

distance covered in 2 hours = 80 km

distance covered in 1 hour = 80÷2 = 40 km

distance covered in 7/2 hours = 40 × 7/2

= 140 km

(3 1/2hours = 7/2 hours)

8 0
3 years ago
Sabrina threw a coin from a building 160 feet high at an initial speed of 30 feet per second. How many seconds will it take the
melomori [17]
Is there a rate of acceleration? If not then by using the formula time = distance/speed you get 160/30. Which equals 5.333, so I would go with B. 
5 0
3 years ago
Read 2 more answers
Other questions:
  • Write a real world situation that could be modeled by the equation 650 + 10m = 60m + 400
    6·1 answer
  • Elizabeth brought a box of donuts to share. there are​ two-dozen (24) donuts in the​ box, all identical in​ size, shape, and col
    9·1 answer
  • 1 with 1 over 3 and 2 over 3
    9·1 answer
  • What is the solution set of y=x^2+2x+7 and y=x+7
    6·1 answer
  • Hey guys help me out please. Need it now
    9·1 answer
  • Find the simple interest rate of a loan of $5,000 that is made for three years and requires $1,762.50 in interes
    5·1 answer
  • The van traveled 120 miles in 7 hours. How long would it take to travel 1400 miles at the same speed? (A) 5/3 hrs (B) 81 2/3 hrs
    6·1 answer
  • 100 points! Will give brainliest! My grade depends on this!
    15·1 answer
  • How did you get your answer, please show me your work
    13·1 answer
  • Debra is fertilizing her garden. The garden is in the shape of a rectangle. Its length is 12 feet and its width is 10 feet. Supp
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!