Answer: 1.3 seconds
Step-by-step explanation:
Given: Distance of the moon to the Earth = 384,400 km = 384400 x 1000 meters = 384400000 meters. [1 km = 1000 m]
Speed of light = m/s = 299800000 m/s
Formula:
Let <em>t</em> be the time taken by the light to travel from the moon to the Earth.
Hence, it will take approximately 1.3 seconds for the light to travel from the moon to the Earth.
Solution: We know that:
Paul and Brett went to math class and were given the same expression to simplify. The expression they were given was 6 + 12 divided by 2(3) + 1.
Looking at the solution's by Paul and Brett, we clearly see that the Paul made a mistake at step 3.
6 + 12 ÷ 2(3) + 1
6 + 12 ÷ 6 + 1 Correct
18 ÷ 6 + 1 Incorrect It should have been 6 + 2 +1
According to order of operation's rule, division needs to done before addition.
Therefore, solution by Paul carries a mistake, while the solution by Brett is correct.
1st answer = 1/4 - 8
2nd answer = 14/9 or 1/5/9
Length = X
Width = 5x-3
For perimeter we multiply the dimensions by two.
2(x) + 2(5x-3) = 138
2x + 10x-6 = 138
12x-6 =138
12x=144
144/12 = 12
Length = 12
Width = 5(12) - 3 = 57
Dimensions = 12 x 57