hey ppl i forgot to add the drop down options on my last question so i made a new one with the options

Use the commutative Property of Addition to  add the last two terms first.

9 + (-17) + (-9) = -17

Hope this helps!! Good luck. :)

answer: this doesnt make any sense especially the photo.

step-by-step explanation:

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.