A cylindrical tank has a diameter of 12 in. with 20 in. of water. A piece of iron is submerged in the water and the water level is raised 6 in. What
is the volume of the piece of iron?

answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation:

hello! just here for points! though i wish i knew!

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

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13 - r - 1 + r

= 12 - r

c

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= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -