If x = y and y = z, which statement must be true?
A. -X=2
B. X= z
C. Z= x
D. -X = -2

B and C

Step-by-step explanation:

Because in another word it means X=Y=Z, So X=Z OR Z=X

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: