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3 years ago

Please help me I need this for tonight

Mathematics

1 answer:

Dimas [21]3 years ago

7 0

C
because if you substitute 4 into x you do 4+8 thats 12
3(4) = 12
so therefore its C

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Need help with this problem please!!!!

katrin2010 [14]

Simply find perimeter for fencing, which is 16+16+8+8 which equals 48. The area is needed for finding the garden area, which is 16*8, which is 128

4 0

3 years ago

Jared is buying a carpet for a square room with sides that are s feet long. The carpet is $2.65 per square foot and the metal st

attashe74 [19]

Answer:

(4s-3)ft

Step-by-step explanation:

The 3 sides of the room will be "s" ft long. The 4th side, the one with the doorway will be "s-3" ft long, the -3 because of the doorway. Then you simply add all the sides of the doorway to get the length for the metal strip.

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3 years ago

The questions below walk through the use of kNN to predict the value of Y for a new point with (X1, X2)=(4, 4). Distance is calc

Nady [450]

Answer:

The Euclidean distance between the two given points is $\sqrt{2}\text{ units}$ .

Step-by-step explanation:

K-NN is used to predict the variable y for a new point with $(X_1,X_2) = (4,4)$

Distance is calculated in the Euclidean sense.

The Euclidean distance between two points is given by the formula:

$\text{Points: }(X_1, X_2), (x_1,x_2)\\\\D = \sqrt{{(x_2-X_2)}^2 + (x_1-X_1)^2}$

The point is $(x_1,x_2) = (3,5)$

The Euclidean distance between the two points is given by:

$D = \sqrt{(5-4)^2 + (3-4)^2} = \sqrt{2}\text{ units}$

Thus, the Euclidean distance between the two given points is $\sqrt{2}\text{ units}$ .

5 0

3 years ago

Which type of parent function does the equation f (x) = a represent?

sweet [91]

I think it’s C, I’m not sure tho so sorry if I get it wrong :(

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3 years ago

Expand the following using the Binomial Theorem and Pascal’s triangle (2x − 3y)^4

krok68 [10]

Answer:

Step-by-step explanation:

Binomial Expansion:

$(2x-3y)^4 \\\\= 4C_0(2x)^4 (-3y)^0 + 4C_1(2x)^3 (-3y)^1 + 4C_2(2x)^2(-3y)^2 \\\\+ 4C_3(2x)^1 (-3y)^3 + 4C_4(2x)^0 (-3y)^4\\\\=16x^4 + 4(8x^3)(-3y) + 6(4x^2)(9y^2) + 4(2x)(-27y^3) + 81y^4\\\\=16x^4 - 96x^3y + 216x^2y^2-216xy^3 +81y^4$

Pascal's Triangle:

Zero row 1

First row 1 1

Second row 1 2 1

Third row 1 3 3 1

Fourth row 1 4 6 4 1

8 0

3 years ago