Which expressions are equivalent to -2(5x-3/4) 1. -2(5x)+(-2)(-3/4)

2. -10x-3/4

3. -10x+6/2

4. -10x+3/2

5. -10x-6/2

1, 4

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: