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1 answer:
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Given the function . The above function can be written as
a)Now, the function has minimum value since the coefficient of
is
.
b) The minimum value of the function occurs at and its value is
c)The minimum value of the function occurs at .
Answer:
x = 13
Step-by-step explanation:
The area (A) of a trapezium is calculated as
A = h (b₁ + b₂ )
where h is the perpendicular height and b₁, b₂ the parallel bases
Here A = 55, h = 5. b₁ = x, b₂ = 9, then
× 5 × (x + 9) = 55
2.5(x + 9) = 55 ( divide both sides by 2.5 )
x + 9 = 22 ( subtract 9 from both sides )
x = 13