Computer programs like spreadsheets can be used to organize and analyze data. true or false

The statement is TRUE

Explanation:

computer programs like spreadsheets can be used to help organize and analyze data. Regression Analysis can be carried out in Excel to determine the relationship between two quantitative variables.

Computer programs like spreadsheets are used to organize and analyze data is a TRUE statement.

Explanation:

The spreadsheets or the database access programs of computer are the ones which helps us to organize a set of data significantly and thus helps to analyze them easily. Taking instance of spreadsheet, each data represented by the user defined parameter and set of value which represents the parameter.  

Each of these are well input in single cell and the cell are spread over sheet in form of rows and column. This helps to give a good organized set of data representation and thus helps in analysis easily.

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.