Marlena solved the equation 2x + 5 = –10 – x. Her steps are shown below. 2x + 5 = –10 – x 3x + 5 = –10 3x = –15 x = –5

correct answer is c. just did it

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:

the answer is b

step-by-step explanation: