Question options:

A.-4

B.0

C.4

D.-2

1. perpendicular

2. parallel

3. perpendicular

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy

answer: your correct answer is b. d.

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: