how far is the sun away from earth?

Question

plz answer in km or something like that!

Answer 1

The sun is at an average distance of about 93,000,000 miles (150 million kilometers) away from Earth. It is so far away that light from the sun, traveling at a speed of 186,000 miles (300,000 meters) per second, takes about 8 minutes to reach us. Like all of the other planets in our solar system, Earth does not travel around the sun in a perfect circle. Instead its orbit is elliptical, like a stretched circle, with the sun just off the center of the orbit. This means that the distance between Earth and the sun changes during a year. At its closest, the sun is 91.4 million miles (147.1 million km) away from us. At its farthest, the sun is 94.5 million miles (152.1 million km) away.

Answer 2

how far is theThe sum of 1, 2, and 4 is 1 + 2 + 4 = 7. Since addition is associative, it does not matter whether we interpret "1 + 2 + 4" as (1 + 2) + 4 or as 1 + (2 + 4); the result is the same, so parentheses are usually omitted in a sum. Addition is also commutative, so the order in which the numbers are written does not affect its sum.

If a sum has too many terms to write them all out individually, the sum may be written with an ellipsis to mark out the missing terms. Thus, the sum of all the natural numbers from 1 to 100 is 1 + 2 + … + 99 + 100 = 5050.

Sums can be represented by the summation symbol, a capital sigma. This is defined as:


The subscript gives the symbol for a dummy variable, i. Here, i represents the index of summation; m is the lower bound of summation, and n is the upper bound of summation. So, for example:


One often sees generalizations of this notation in which an arbitrary logical condition is supplied, and the sum is intended to be taken over all values satisfying the condition. For example:


is the sum of f(k) over all (integer) k in the specified range,


is the sum of f(x) over all elements x in the set S, and


is the sum of μ(d) over all integers d dividing n.

(Remark: Although the name of the dummy variable does not matter (by definition), one usually uses letters from the middle of the alphabet (i through q) to denote integers, if there is a risk of confusion. For example, even if there should be no doubt about the interpretation, it could look slightly confusing to many mathematicians to see x instead of k in the above formulae involving k. See also typographical conventions in mathematical formulae.)

There are also ways to generalize the use of many sigma signs. For example,


is the same as


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Computerized notation
Summations can also be represented in a programming language.



is computed by the following C / C++ / Java / JavaScript program:

sum = 0;
for(i = m; i <= n; i++)
sum += x[i];
the following Common Lisp program:

(loop for i from m to n sum i)
the following Visual BASIC program:

Sum = 0
For I = M to N
Sum = Sum + X(I)
Next I
the following Pascal program:

sum := 0;
for i := m to n do
sum := sum + x[i];
the following Python program:

#using a for-loop
sum_ = 0
for n in range(m, n+1):
sum_ += n

#using built-in functions
sum_ = sum(range(m, n+1))
the following Ruby program:

#using built-in inject method, Ruby's reduce
sum_ = (0..n).to_a.inject(0) { |sum,m| sum += m }
the following Perl line:

$sum += $x[$_] for $m..$n;
APL allows a concise notation for summation via the "reduce" operator:

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Special cases
It is possible to add fewer than 2 numbers:

If you add the single term x, then the sum is x.
If you add zero terms, then the sum is zero, because zero is the identity for addition. This is known as the empty sum.
These degenerate cases are usually only used when the summation notation gives a degenerate result in a special case. For example, if m = n in the definition above, then there is only one term in the sum; if m = n + 1, then there is none.

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Approximation by definite integrals
Many such approximations can be obtained by the following connection between sums and integrals, which holds for any increasing function f:


For more general approximations, see the Euler-Maclaurin formula.

For functions that are integrable on the interval [a,b], the Riemann sum can be used as an approximation of the definite integral. For example, the following formula is the left Riemann sum with equal partitioning of the interval:


The accuracy of such an approximation increases with the number n of subintervals.

[edit]
Identities
The following are useful identities:



(see arithmetic series)
where is a binomial coefficient
where Bk is the kth Bernoulli number.



(see geometric series)
(special case of the above where m = 0)
(see binomial coefficient)





[edit]
Growth rates
The following are useful approximations (using theta notation):

for real c greater than -1

for real c greater than 1
for nonnegative real c
for nonnegative real c, d
for nonnegative real b > 1, c, d

Answer 3

93 million miles approx (148,800,000 km approx)

Answer 4

93 million miles, 150 million kilomerters, give or take.

Answer 5

150 millions of kilometre.

Answer 6

Do your own homework, bound to be on an astronomy site!!!!

Answer 7

92,955,820.5 miles (149,597,892 kilometers).
If you are going there, It's best to fly at night so that you won't get burnt.

Answer 8

Its a good walk.

Answer 9

12.3 miles....

use Google.

Answer 10

93,000,000 miles away