Find the possible value or values of z in the quadratic equation z2 – 4z + 4 = 0.
A. z = 10, z = 6
B. z = 2 2 + 2, z = 2 + 2
C. z = 2
D. z = 2 + 2, z = 2 + 2

z^2 – 4z + 4 = 0 ; z^2 – 2z - 2z + 4 = 0 ; z(z -2) -2(z -2) = 0 ; (z-2)(z-2) =0 ; z = 2 , 2.

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Asked 2/8/2019 12:14:00 PM

Updated 1/13/2021 11:55:56 PM

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z^2 – 4z + 4 = 0 ; z^2 – 2z - 2z + 4 = 0 ; z(z -2) -2(z -2) = 0 ; (z-2)(z-2) =0 ; z = 2 , 2.

Added 1/13/2021 11:55:56 PM

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Updated 3/25/2021 1:20:20 PM

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Not Answered

Updated 10/20/2020 9:06:40 AM

1 Answer/Comment

13564.8 cu.ft water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet. Volume of cylinder = pi *r^2 *h = 3.14 *12^2 *30 =13564.8 cu.ft.

Added 10/20/2020 9:06:40 AM

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Updated 266 days ago|6/4/2023 10:27:41 PM

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If the area of a square is 64 square centimeters, what's the length of one side?
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Not Answered

Updated 9/20/2022 11:11:36 AM

1 Answer/Comment

If the area of a square is 64 square centimeters, the length of one side is 8 cm. Area = a^2 , 64 =a^2 , a=(64)^1/2 , a=8cm.

Added 9/20/2022 11:11:36 AM

This answer has been confirmed as correct and helpful.

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