Find the 100th term in the arithmetic sequence

-19,-14,-9,-4,1...

476

Step-by-step explanation:

hello :

the common diference is : d = ( 1)-(-4)=(-4)-(-9)=(-9)-(-14)=(-14)-(-19)=5

the firt term is A1 = -19

the n-ieme term is : An = A1 +(n-1)d

An = -19+5(n-1)

An = 5n-24

the 100th term in the arithmetic sequence  is : A100 = 5(100)-24 =476

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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: