Identify the constant proportionality: k=
1 answer:
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Answer:
x = - , x =
Step-by-step explanation:
Given
x² - x - = 0 ( add
to both sides )
x² - x =
Solve using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2( - )x +
=
+
(x - )² = 1 ( take the square root of both sides )
x - = ± 1 ( add
to both sides )
x = ± 1
Thus
x = - 1 = -
x = + 1 =
Answer:
<h2>54 in²</h2>Step-by-step explanation:
Look at the picture.
The edge of the cube is equal to the diagonal of the sphere.
Therefore, the length of the cube's edge is 3 inches.
The formula of a surface area of a cube:
Substitute a = 3 in:
