## anonymous one year ago The speed of light is 3 x 105 kilometers/second. If the sun is 1.5x 108 kilometers from Earth, how many seconds does it take light to reach the Earth? Several days 0.5 seconds 45000 seconds 8 minutes and 20 seconds

1. anonymous

$c = \frac{ d }{ t } \implies t = \frac{ d }{ c }$ c is the speed of light, d is the distance of the sun from the earth, you're solving for t here :)

2. arindameducationusc

agree with @iambatman

3. anonymous

So is it 8 minutes and 20 seconds @iambatman

4. anonymous

That sounds right!

5. anonymous

Ok thanks do you think you can help with some more

6. anonymous

Simplify the expression 12(3 + x) – 4(5x – 6).

7. LunyMoony

36 + 12x - 20x - 24

8. LunyMoony

36 + 12x - 20x + 24

9. LunyMoony

Oh, if I must ... 60 - 8x

10. LunyMoony

*Runs and hides*

11. LunyMoony

*Scratches brow*

12. anonymous

Here's the answer choices 32x+60 -8x+12 32x+12 -8x+60

13. LunyMoony

Ok, so number 4?

14. anonymous

You need to distribute meaning multiply through, as such |dw:1440221377149:dw| I think this may be more clear.

15. anonymous

Now just collect like terms

16. anonymous

|dw:1440232258905:dw|

17. LunyMoony

Wow, you just stated what I stated I believe, Batman

18. anonymous

You're right! But we must make sure @LiveLaughDie understands how to do the problems!

19. LunyMoony

Don't worry about it ...give da batman a medel!

20. LunyMoony

Ok, now take it away

21. anonymous

Find the value of F, if a = 0.2.

22. LunyMoony

You have a list of answers, or no? @LiveLaughDie

23. LunyMoony

If I am correct, then it goes like this ... 1 + 0.2 1 + 0.4 1 + 1.6 1 + 6.4 1 +45.6 Equaling ... 59.2