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serious [3.7K]
3 years ago
13

If x is direct proportional to y cube and x=32 when y=2

Mathematics
1 answer:
Setler [38]3 years ago
5 0

Answer:

1x=864,

2y=3

Step-by-step explanation:

y=6,x=?

if x is directly proportional to y^3 &if (when x=32, y is=2) we can understand that x=4y^3

1,x=4y^3

x=4(6^3)

x=4(216)

x=864

2,x=4y^3

108=4y^3

108/4=4y^3/4

27=y^3

√27=y

y=3

i think it is easy to understand,but if the answers are not clear you can ask me &i hope it helps you

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Inessa [10]
X + 2y - 6 = z..........x + 2y - z = 6
3y - 2z = 7
4 + 3x = 2y - 5z.....3x - 2y + 5z = -4

x + 2y - z = 6.....multiply by -3
3x - 2y + 5z = -4
---------------------
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3x - 2y + 5z = -4
--------------------add
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3y - 2z = 7 .....multiply by 4
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4y = 6
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x + 2y - 6 = z
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x + 3 - 6 = -5/4
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x = -5/4 + 12/4
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Explanation:

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8 0
3 years ago
Read 2 more answers
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