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mestny [16]
3 years ago
14

Subtracing 3x2+4x-5 from 7x2-3x from this polynomial the difference is

Mathematics
1 answer:
kolezko [41]3 years ago
4 0
7x^2-3x - (3x^2 +4x -5)  multiply negative one across the entire second term

7x^2 - 3x -3x^2 -4x +5

4x^2 -7x +5
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Please help with question with explanations. Ty.
earnstyle [38]

Answer:

last option is correct answer

Step-by-step explanation:

perimeter = 2(l + w) \\  = 2( \frac{5x + 10}{2x + 5}  +  \frac{x - 2}{2x + 5} ) \\  = 2( \frac{5x + 10 + x - 2}{2x + 5} ) \\  = 2( \frac{6x + 8}{2x + 5} ) \\  =  \frac{12x + 16}{2x + 16}

4 0
2 years ago
11. please help me outt ill mark you brainlist !
alex41 [277]
I’m not positive, but I think the answer is C because when you look at the big triangle, it looks like you divide each coordinate by 3 (or multiply it by 1/3) to get the small triangle.

e.g. 6 * 1/3 = 2, 3 * 1/3 = 1
8 0
3 years ago
NO LINKS!! Please help me with these graphs​
Stella [2.4K]

Answer:

  • square: 9 square units
  • triangle: 24 square units

Step-by-step explanation:

Using a suitable formula the area of a polygon can be computed from the coordinates of its vertices. You want the areas of the given square and triangle.

<h3>Square</h3>

The spreadsheet in the first attachment uses a formula for the area based on the given vertices. It computes half the absolute value of the sum of products of the x-coordinate and the difference of y-coordinates of the next and previous points going around the figure.

For this figure, going to that trouble isn't needed, as a graph quickly reveals the figure to be a 3×3 square.

The area of the square is 9 square units.

<h3>Triangle</h3>

The same formula can be applied to the coordinates of the vertices of a triangle. The spreadsheet in the second attachment calculates the area of the 8×6 triangle.

The area of the triangle is 24 square units.

__

<em>Additional comment</em>

We have called the triangle an "8×6 triangle." The intention here is to note that it has a base of 8 units and a height of 6 units. Its area is half that of a rectangle with the same dimensions. These dimensions are readily observed in the graph of the vertices.

7 0
1 year ago
This isn't really a school-related question.It's more of a conflict I have with my self. So: I have a friend that constantly cop
ycow [4]
Well to be honest, you need to straight forward to her and tell her that you do not appreciate her copying you and tell her you dont want to be rude or anything, but this needs to stop.
8 0
3 years ago
8/9k + 9/5 = -4 - 9/7k
Mamont248 [21]

Answer:

k=-1827/685

Step-by-step explanation:

8/9k+9/5=-4-9/7k

8/9k-(-9/7k)=-4-9/5

8/9k+9/7k=-20/5-9/5

56/63k+81/63k=-29/5

137/63k=-29/5

k=(-29/5)/(137/63)

k=(-29/5)(63/137)

k=-1827/685

7 0
3 years ago
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