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
xz_007 [3.2K]
3 years ago
7

A Lua reflete parte da luz solar que nela incide. Admite que: a luz refletida pela Lua demora 1,28 segundos a chegar à Terra; en

tre a Lua e a Terra, a luz percorre 300 000 000 de metros em cada segundo; o trajeto da luz é retilíneo. Determina a distância da Lua à Terra. Apresenta o resultado em metros, escrito em notação científica. Mostra como chegaste à tua resposta.
Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
4 0

Answer:

3.84 * 10^8 meters

Step-by-step explanation:

As the speed of light is 300,000,000 meters/second and the time that the light takes to go from the moon to the Earth is 1.28 seconds, we can find the distance using the formula:

Distance = speed * time

So we have that:

Distance = 300,000,000 * 1.28 = 384,000,000  meters

In cientific notation, we need the first number to be in the interval from 1 to 10, so we have 3.84, and we have to multiply by 10^8 to reach our result, so we have:

Distance = 3.84 * 10^8 meters

You might be interested in
What is1/12+7/9. I need help.
Katarina [22]
You have to make them have their least common denominator to add or subtract, in this case 36.
Multiply 1/12 by 3, to get the denominator 36: 3/36.
Multiply 7/9 by 4, to get the denominator 36: 28/36.
Now add the numerators: 3+28=31, 31/36 is as simplified as possible so your answer is 31/36 :) I hope this helps :)
7 0
3 years ago
An arrow is shot vertically upward from a platform 45 feet high at a rate of 168 ft/sec. Use the quadratic function
Maksim231197 [3]

Answer:

5.3 s

Step-by-step explanation:

a) since the height is defined by a function, we can find the turning point of the quadratic , which is where the ball will have the highest point. The turning point is where the gradient is equal to zero so we differentiate first

h(t) = -16t^{2} + 168t + 45\\h'(t)= -32t+168\\0=-32t+168\\t=5.3s

8 0
3 years ago
Read 2 more answers
Use the following data to calculate the curve of the best-fit.
polet [3.4K]
The answer is D as in dog
7 0
3 years ago
If the graph of the function f(x) = x2 + 2 is translated right 5 units, what is the equation of the new function?
boyakko [2]
The answer should be B
5 0
3 years ago
EXPLANATION?????
crimeas [40]

Answer:

Hello! answer: x = 19

Step-by-step explanation:

This is a supplementary angle! So it will add up to 180 degrees 180 - 123 = 57 so we know something multiplied by 3 will equal 57 and 19 × 3 = 57 so x = 19 Hope this is a good explanation!

4 0
3 years ago
Read 2 more answers
Other questions:
  • The original point is (-7, 2), what is the new point after a reflection across the x-axis?
    13·2 answers
  • Whats five times twenty
    6·2 answers
  • Ian has 15 boxes of paper and divides them evenly between 4 coworkers. How many whole boxes did each coworker get?
    6·1 answer
  • What does /12/+/-2/ egual and explain how
    7·1 answer
  • Choose the approximate percentage that completes each numerical relationship. 12 is about how much of 43. 19 is about how much o
    8·1 answer
  • I need help with this question
    14·2 answers
  • Solve the inequality -2z - 3 < 5
    12·2 answers
  • Why is the distributive property so important
    6·1 answer
  • Mary draws the number line below to represent the solution set of the inequality 50 – 8t < 90. What mistake did Mary make? Us
    5·2 answers
  • Choose an appropriate data display for the distance a person hikes each week.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!