The two trapezoidal faces together have an area of
.. (5 in)*(5 in +9 in) = 70 in^2
The remaining surface can be unfolded to an area that is
.. (5 in)*(5 in +9 in +6.4 in +5 in) = 127 in^2
Together, these add to
.. 70 in^2 +127 in^2 = 197 in^2 . . . . . . . the 4th selection
Usually the easiest way to solve this is by using a calculator. Of course only if your teacher allows you too.
we know that
speed = (total distance)/(total time)
so, total distance =60+180+540+660
total distance =1440 mi
total time =10+30+90+110
total time =240 min
now, we can change time into hours
total time =
total time =4 hours
now, we can find speed
speed of the plane in miles per hour is 360 mph...........Answer
Answer:
(A) 0 (B) f(x)≥3/2
Step-by-step explanation:
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