Score. vulp
2.4.121
in 2008, there were 33,220 analog (nondigital) movie screens. in 2012, this number of
screens dropped to 6304. -
a. find the change in the number of analog movie screens from 2008 to 2012
b. find the average change per year in the number of analog movie screens over this period.
a. the change in the number of analog movie screens from 2008 to 2012 is

a)The number of non-digital movie screens reduced by 26916 in four years

b)On average, 6729 non-digital movie screens reduced  per year.

Step-by-step explanation:

a)Given that the number of non-digital movie screens was;

2008= 33220

2012=6304

The change is 6304-33220= - 26916

The number of non-digital movie screens reduced by 26916

b) To find the change per year, you know from 2008 to 2012, its 4 years hence divide the change in (a) by 4

= -26916/4 = -6729

On average, 6729 non-digital movie screens reduced  per year.

9987

step-by-step explanation:

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: