For each equation, write a story problem represented by the equation. For each equation, state what quantity 3 represents. If you get stuck, draw a diagram.
3/4+x= 21.5x = 6

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:

70 years.

step-by-step explanation:

47

step-by-step explanation:

multiply each one by 3.14

step-by-step explanation: