3 years ago

Please help me with this homework

Mathematics

1 answer:

andriy [413]3 years ago

8 0

Answer:

wow. at this point just guess

Step-by-step explanation:

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Which expressions represent a difference of squares?

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Answer:

$25 {x}^{2} - 36\\ 1-16x^2\\4x^2 - 12x + 9$

Step-by-step explanation:

$25 {x}^{2} - 36 \\ = ( {5x})^{2} - ( {6})^{2} \\$

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jeyben [28]

I believe its "True"

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Bas_tet [7]

Answer:

True

Step-by-step explanation:

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3 years ago

What two dimensional cross sections can we create by slicing a cube

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3 years ago

What is the length of AB? <br> 6units? , 12 units?, 10 units ?, 14 units?

Readme [11.4K]

Answer:

C. 10 units

Step-by-step explanation:

Use the distance formula:

$(x_{1},y_{1})\\\\(x_{2},y_{2})\\\\d=\sqrt{(x_{2}-x_{2})^2+(y_{2}-y_{1})^2}$

Find the coordinate points of A and B:

$A(-7,-6)\\\\\\B(1,0)$

Insert the values into the formula:

$d=\sqrt{(1-(-7))^2+(0-(-6))^2}$

Two negatives make a positive. Simplify:

$d=\sqrt{(1+7)^2+(0+6)^2}$

Simplify addition:

$d=\sqrt{(8)^2+(6)^2}$

Simplify exponents (x²=x·x):

$d=\sqrt{64+36}$

Simplify addition:

$d=\sqrt{100}$

Find the square root (x·x=√y):

$d=10$

The length of AB is 10 units.

:Done

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3 years ago