A school’s trophy case is a rectangular prism with a height of 3.5 feet. If the width of the base is 1.8 feet and the volume of the trophy case is 81.9 cubic feet, how long is the base?

what is all that apply?

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion

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: