PLEASE HELP GEOMETRY NEED IN 10 MINS!!

1. If P(F^c)=6/7, then P(F)=
A 3/7
B 1/7
C 6/7
D 1

2. If P(B^c)=3/8, then P(B)=
A 1
B 3/4
C 5/8
D 3/8

3. If P(D)=0.43, then P(D^c)=??
A 0.21
B 1
C 0.57
D 0.43

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:

answer: 100

step-by-step explanation: