Jody has 2 red marbles, 6 blue marbles, and 9 yellow marbles. what is the ratio of red marbles to blue marbles?

1/3

Step-by-step explanation:

The ratio of 2 red marbles to 6 blue marbles is 2/6, or 1/3.

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: