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The nearest star to our sun is Proxima Centauri, at a distance of 4.3 light-years from the sun. A light-year is the distance that light travels in one year (365 days). How far away, in km, is Proxima Centauri from the sun?

In astronomy, distances are often expressed in light-years. One light-year is the distance traveled by light in one year. The distance to Alpha Centauri, the closest star other than our own sun that can be seen by the naked eye, is about 4.3 light-years. Express this distance in meters

I am struggling so bad with these questions. Any help would be so appreciated. It was due yesterday but I am so lost. :(

1. How many high fives will alan get in 30 seconds?

2. The maximum function is

The minimum function is

Simplify the given rational expression.

x^2+2x/9x^2-76x+32 (divided by) x^2+10x+16/x^2-3x-40

simplify the complex rational equation 5 + 4/x divided by 25 - 16/x^2

simplify {(x^2-16)/(x^2-25)]{(x-5)/(x-4)}

simply {(x^2-16)/(x^2-25)[(x-5)/(x-4)]

Emilio is pickling tomatillos with his grandfather. The tomatillos are approximately spheres with a diameter of 6 cm. The pickling jar they are using has a diameter of 8 cm and a height of 21 cm. The jar can hold 3 tomatillos.

When there are three tomatillos in the jar, how much empty space is in the jar?

Leave it in terms of pie!

  Glenda paid $24 for 6 books. What is the rate that Glenda paid for each book?

Students were asked to find three consecutive whole numberswhose sum is 393. One student wrote the equation x + (x + 1) + (x +2) = 393. Another wrote (x -1) + x + (x + 1) = 393. Can eitherapproach work to find the answer to the question? Explain why orwhy not.

Glass is made from the mixture of

(A) Quartz and mica

(B) Sand and salt

(C) Sand and silicates

(D) None of these

The law of Octaves is due to

(A) Mendeleev

(B) Lother Mayer

(C) Dobereiner

(D) Newlands

In coloured glass. the purple colour is imparted by

(A) Manganese oxide

(B) Cadmium sulphide

(C) Ferric oxide

(D) Selenium sulphide

Tear gas is

(A) Ammonia

(B) Hydrogen sulphide

(C) Chlorine

(D) Hydrogen chloride

Which one of the following is the softest?

(A) Aluminium

(B) Iron

(C) Lithium

(D) Sodium

Find the answer:

x = 3 - y

x + y = 7

What is 2-2 ?

What is 2 +2

6(3-z)=-z

2×5÷3/3=? 

Answer ?

Solve
(4/x+7)+(9/x+3)=1

I believe that this problem is supposed to have 2 solutions, but Imnot sure.

Please help explain this step by step: Thank You Soooooo much

Please explain this in step by step solution. thanks!

The light-year (ly) is a unit of distance commonly used in astronomy. It is defined as the distance traveled by light in a vacuum in one year.

(a) Express 1 ly in km.

(b) Express the speed of light, c, in units of ly per year.

(c) Express the speed of light in feet per nanosecond.

Alpha Centauri, the closest star to the sun, is 4.3 ly away.

How far is this in meters?

Solve the equation by using the quadratic formula. Enter the exact solutions separated by a comma.

4x2−3x−9=0

x = ?