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Mathematics
06.02.2022 09:20
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Help please, I will mark you as brainliest

Help please, I will mark you as brainliest
Help please, I will mark you as brainliest
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yadi64
yadi64
4,5(56 marks)

Step-by-step explanation:

Im confused with the second one but it matched with the option.


Help please, I will mark you as brainliest
Help please, I will mark you as brainliest
jbrooks4091
jbrooks4091
4,7(69 marks)
-9y^4x^4-11y^3x^4+7y^39x^3+33x^2-50

Step-by-step explanation:

1. Length = 3x^2 +6x-10

Width = 3x+5

Area = ?

Area = Length×Breadth

\left(3x+5\right)\left(3x^2+6x-10\right)\\\\\mathrm{Distribute\:parentheses}\\\\=3x\times\:3x^2+3x\times\:6x+3x\left(-10\right)+5\times\:3x^2+5\times\:6x+5\left(-10\right)\\\\\mathrm{Apply\:minus-plus\:rules}\\\\+\left(-a\right)=-a\\\\=3\times\:3x^2x+3\times\:6xx-3\times\:10x+5\times\:3x^2+5\times\:6x-5\times\:10\\\\Simplify\\\\=9x^3+33x^2-50

2.

\left(y^3-7x^4y^4\right)+\left(-10x^4y^3+6y^3+4x^4y^4\right)-\left(x^4y^3+6x^4y^4\right)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\\\=y^3-7x^4y^4-10x^4y^3+6y^3+4x^4y^4-\left(x^4y^3+6x^4y^4\right)\\\\=y^3-7y^4x^4-10y^3x^4+6y^3+4y^4x^4-\left(y^3x^4+6y^4x^4\right)\\\\=y^3-7x^4y^4-10x^4y^3+6y^3+4x^4y^4-x^4y^3-6x^4y^4\\\\Simplify\\\\=-9y^4x^4-11y^3x^4+7y^3 \\

rubyhart522
rubyhart522
4,9(41 marks)

0.872

Step-by-step explanation:

The line is increasing.  This means the correlation coefficient will be positive.

This is a fairly good fit; this means we want the larger of the two positive numbers, or 0.872.

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