The wavelength of violet light in a spectrum is about 0.4 meters. which number best approximates this length as a power of 10
a. 4 x 10^-7
b. 4 x 10^-6
c. -4 x 10^7
d. 4 x 10^7

Option A is correct.

Step-by-step explanation:

The wavelength of violet light in a spectrum is about 0.0000004 meters.

Now, we have to express this wavelength best approximate as a power of 10.

Now, 0.0000004 can be written as

Therefore, 0.0000004 meters = meters

So, 0.0000004 meters = meters

Hence, option A gives the correct answer. ( Answer )

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.