7x +4(2-6) PLEASE HELP ME I'm really desperate

We can use distribution property or whatever it's called:

7x + 4(2-6)

7x + 8 - 24.

7x -16

well we know there are 4 clubs in 52 cards so it’s replaced so it should be 3/51

step-by-step explanation:

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: