Apainter is painting a wall with an area of 150 ft2. he decides to paint half of the wall and then take a break. after his break, he paints half of the remaining unpainted portion and then takes another break. if he continues to paint half of the remaining unpainted portion between breaks, approximately what portion of the original wall will be painted when he takes his fifth break?

B. 145.31 ft2

Step-by-step explanation: it’s the right answer

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:

the answer is 8.64

step-by-step explanation: