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vladimir2022 [97]
3 years ago
9

Simplify the expression below -3(10x + 4y) + 6(6x − 2y)

Mathematics
2 answers:
11111nata11111 [884]3 years ago
7 0

For this case we must simplify the following expression:

-3 (10x + 4y) +6 (6x-2y)

We apply distributive property to the terms of the parenthesis, taking into account that:

- * - = \\- * + = -

So, we have:

-30x-12y + 36x-12y =

We add similar terms:

-30x-12y + 36x-12y =

Equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed:

6x-24y

ANswer:

6x-24y

iren [92.7K]3 years ago
3 0

Answer:

6x - 24y

Explanation:

Expand -3(10x + 4y): -30x - 12y

= \bold{-30x-12y+6\left(6x-2y\right)}

Simplify \bold{-30x-12y+6\left(6x-2y\right): \ 6x-24y}

= 6x - 24y

Mordancy.

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Remark
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Step One
Divide both terms in the numerator by x^(1/2)
y= 6x^(1/2) + 3x^(5/2 - 1/2)
y =6x^(1/2) + 3x^(4/2)
y = 6x^(1/2) + 3x^2   Now differentiate that. It should be much easier.

Step Two
Differentiate the y in the last step.
y' = 6(1/2) x^(- 1/2) + 3*2 x^(2 - 1)
y' = 3x^(-1/2) + 6x  I wonder if there's anything else you can do to this. If there is, I don't see it.

I suppose this is possible.
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Frankly I like the first answer better, but you have a choice of both.
5 0
3 years ago
Vertex A in quadrilateral ABCD lies at (-3, 2). If you rotate ABCD 180° clockwise about the origin, what will be the coordinates
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The rule for a rotation by 180° about the origin is (x,y) -->(−x,−y)

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A group of neighbors are constructing a community garden that is 80 m wide and 40 m long the top to vertex are plotted below at
Ainat [17]

Question Correction

A group of neighbors are constructing a community garden that is 80 meters wide and 40 meters long. The top two vertices are plotted below at (10, 70) and (90, 70). What are the coordinates for the bottom two vertices of the garden?

Answer:

(10,30) and (90,30)

Step-by-step explanation:

The community garden is 80 m wide and 40 m long.

The top two vertex are plotted at: (10, 70) and (90, 70).

Horizontal Distance =90-10=80

This serves as the Width of the garden.

Since the length is 40m, the bottom two vertex can be derived by the transformation: (x,y-40).

(x,y-40)-->(10, 70)=(10,30); and

(x,y-40)-->(90, 70)=(90,30)

The coordinates for the two bottom vertices are (10,30) and (90,30).

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