Pascale leaves the office to go home. She walks 12 blocks due north and then 9 blocks due west. How far is she from the office?
O 13 blocks
O 14 blocks
O 15 blocks
O 19 blocks

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

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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:

the answer is  

a.

4,624π mm2

step-by-step explanation: