the value of (2 x 10^4) + (9 x 10^4) - (3 x 10^3) in scientific notation?

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

c > -10.55

step-by-step explanation:

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

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: