Answer:
20.46 ft²
Step-by-step explanation:
Area of trapezium:
½×(sum of parallel sides)×height
= ½(2.9+9.5)×3.3
= 20.46
It's the same only adding a zero at the end
Answer:
84.474 feet
Step-by-step explanation:
The reason you can use simple multiplication is because of the units:
46.93 ft/sec x 1.8 sec would equal 84.474 ft ⋅ sec
However, the seconds cancel out, leaving you with just the distance traveled.
The reason the answer is 84 instead of 84.474 is because the number 1.8 only contains two significant figures.
(2-7m^6)^2
rearrange terms:
(2-7m^6)^2
(-7m^6 + 2)^2
expand the squares:
(-7m^6 + 2)^2
(-7m^6 + 2)(-7m^6 + 2)
distribute:
(-7m^6 + 2)(-7m^6 + 2)
-7(-7m^6 + 2) • m^6 + 2(-7m^6 + 2)
distribute:
-7(-7m^6 + 2) • m^6 + 2(-7m^6 + 2)
49m^12 - 14m^6 + 2(-7^6 +2)
distribute:
49m^12 - 14m^6 + 2(-7^6 +2)
49m^12 - 14m^6 - 14m^6 + 4
combine like terms:
49m^12 - 14m^6 - 14m^6 + 4
49m^12 - 28m^6 + 4
solution:
49m^12 - 28m^6 + 4
please mark brainliest and hope it helps
Answer:
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