Mary and benjamin are driving to their friend paul’s house for a birthday party. mary drives nine miles north and six miles east to get there, while benjamin drives three miles south and seven miles west. how far does mary live from benjamin?

i did it myself and i got 4.2 (b) hope its right

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: