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Rama09 [41]
3 years ago
11

Solve for the variable "a" in this equation. Show work: c=8πab

Mathematics
1 answer:
Contact [7]3 years ago
7 0
C=8πab
Divide both sides by 8πb
c/(8πb) = a
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The length of each edge of a cube is decreased by 40 percent By what percent does the volume of the cube decrease? Express your
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Answer:

78% (to the nearest tenth)

Step-by-step explanation:

Volume of a cube = (length )³

Let the length of the cube = y

Original volume = y³

if the length is decreased by 40%, then new length = 1- (40% of y)

                                                                                     = 1-0.4y

                                                                                     =  0.6%

New volume (after decreasing the length) = (0.6y)³

                                                                      =  0.216‬‬y³

% Volume decrease = (Original volume - New volume)/Original Volume x 100%

                                 =  (y³ - 0.216‬‬y³)/ y³  x 100%

                                 = 0.784y³/y³  x 100%

                                 =78.4%

                                ≈78%

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

5 <u>></u> c

Step-by-step explanation:

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