Answer:
mean=57
range=19
Step-by-step explanation: there you go
None of theses expressions listed are equivalent to -80 due to the reason that nothing = nothing. Please list answer options below.
Answer:
73.5 
Step-by-step explanation:
The shaded area is in the shape of a trapezoid, so to find the area all we have to do is use the formula
, where <em>h</em> is height, <em>a</em> is base 1, and <em>b</em> is base 2.
Plugging in the values, work on solving this equation:
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We should be left with

Surface area of the room:
area of ceiling + floor + the four walls
ceiling area = floor area
Total surface = 15 + 15 +32 = 62 m²