Question

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

Answer 1

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

Answer 2

agree with @iambatman

Answer 3

So is it 8 minutes and 20 seconds @iambatman

Answer 4

That sounds right!

Answer 5

Ok thanks
do you think you can help with some more

Answer 6

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

Answer 7

36 + 12x - 20x - 24

Answer 8

36 + 12x - 20x + 24

Answer 9

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

Answer 10

*Runs and hides*

Answer 11

*Scratches brow*

Answer 12

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

Answer 13

Ok, so number 4?

Answer 14

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