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m_a_m_a [10]
3 years ago
7

Pls answer... It is in the image.

Mathematics
1 answer:
ehidna [41]3 years ago
5 0

Step-by-step explanation:

2,

(a.y^{3} +3y^{2} -3 ) = (ay^{2} +(4a+3)y +4(4a+3))(y-4) +64a+45

so A = 64a +45

(2y^{3} -5y+a =(2y^{2} +8y +27)(y-4) +108 +a

so B = 108 +a

2A-B=0--> 2(64a+45)-108-a=0--> a =18/127

3,

(3x+2y)^3 = 27x^3 +54x^2.y + 36x.y^2 +8y^3 = 27x^3 +8y^3 +2 +18xy(3x +2y) = 20^3

so P = 27x^3 +8y^3 = 20^3 - 18.xy(3x+2y)= 7440

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Veseljchak [2.6K]

In decimal numbers we have this rule :

If we multiply a decimal number by 10, 100, 1000... , then we move the decimal point by 1, 2 ,3 ,.... digits to the right side. It depends on the number of zeros .

If we divide a decimal number by 10, 100, 1000... , then we move the decimal point by 1, 2 ,3 ,.... digits to the left side. It depends on the number of zeros .

So in multiplication we move to the right side.

Multiplied by 10 - moves one place to the right side

Multiplied by 100 - moves two places to the right side.

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3 years ago
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lora16 [44]

Hey there!

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4 years ago
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4 years ago
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givi [52]

Answer:

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Answer:

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Step-by-step explanation:

supplementary means that they add up to 180º

1,3                    5,6              1,7          

2,4                   7,8              2,8

1,2                    5,7              3,5

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There are still some more but my hands are tired of typing.

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