What is the probability that when flipping a quarter i get two heads in a row?
1/2
1/4
1/8
1

Step-by-step explanation:

P(H) = 1/2

P(H,H) = 1/2 * 1/2

=1/4

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:

b