Astronomers estimate that as many as 100 billion stars in the milky way galaxy are encircled by planets. if so, we may have a plethora of cosmic neighbors. let p denote the probability that any such solar system contains intelligent life. how small can p be and still give a 50-50 chance that we are not alone?

£56

step-by-step explanation:

u divide 24 by 3 and u get 8 so if u do 8 time 7 or 8+8+8+8+8+8+8 u get 56 and 56 divided by 7 is 8.

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:

explanation:

step-by-step explanation: