Answer: so the red dots are incorrect
the green ones are correct
the yellow ones are also correct (that i missed)
Step-by-step explanation:
Heya!
Answer is 
<u>EXPLANATION</u><u> </u><u>:</u><u>-</u>
Given
x-y= -5
x-y=1³
Substitute value of x - y as 1³ in first equation,
=> x-y= -5
=> 1³ = -5
As we can't do anything more to solve, we can finally write as :
~ Benjemin360
Answer:
a
Step-by-step explanation:
The square root of 81 is 9 because 9x9=81 so thats definitely an integer its a rational number.
Answer:
x = h = ∛7 cm ≈ 1.913 cm
Step-by-step explanation:
The volume and other dimensions are related by ...
V = Bh = x²h
Solving for h gives ...
h = V/(x²)
The surface area is ...
S = 2(x² +h(2x)) = 2x² +4x(V/(x²)) = 2x² +4V/x
Differentiating with respect to x, we can find where the derivative is zero.
S' = 4x -4v/(x²) = 0
x³ -V = 0 . . . . . . . multiply by x²/4
x = ∛V . . . . . . . . . solve for x
h = V/(∛V)² = (∛V)³/(∛V)² = ∛V
The surface area is minimized when the box is a cube. Its edge lengths are all (∛7) cm ≈ 1.913 cm.
