9. construct arguments al made a tree house last summer. he started by
making a model. the model included a window with a height of 1/3 inch
and a width of 1/6 inch. the actual window had a height of 1/2 yard and a
width of 1/4 yard. was al's model an accurate representation? explain.

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.  

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2