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ElenaW [278]
2 years ago
14

Simplify 4х+ 2-

Mathematics
1 answer:
exis [7]2 years ago
7 0

Answer:

3x - 2

Step-by-step explanation:

4x + 2 -  \frac{ {x}^{2}  + x - 12}{x - 3}  \\  \\  = 4x + 2 -  \frac{ {x}^{2}  + 4x  - 3x- 12}{x - 3}  \\  \\  =  4x + 2 -  \frac{ {x}(x  + 4)  - 3(x  + 4)}{x - 3}  \\  \\  = 4x + 2 -  \frac{ (x  + 4)   \cancel{(x- 3)}}{\cancel{(x- 3)}}  \\  \\  = 4x + 2 - (x + 4) \\  \\  = 4x + 2 - x - 4 \\  \\  = 4x - x + 2 - 4 \\  \\  = 3x - 2

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A circle passes through the point (0,0.5). What it’s radius
belka [17]

Answer: The radius of this circle is 0.5

Step-by-step explanation:

We have a circle that passes through the point (0, 0.5)

We do not know the center of the circle, so we have infinite possible radius to answer this, but let's suppose that the center of the circle is in the point (0, 0)

For a circle centered in the origin, we have the equation:

x^2 + y^2 = r^2

Where r is the radius.

Here we have that x = 0 and y = 0.5

then:

0^2 + (0.5)^2 = r^2

0.5^2 = r^2

r = 0.5

The radius of this circle is 0.5

6 0
3 years ago
The tables below show two functions. For each set of data:
slamgirl [31]
The first table, representing <em>f</em>(<em>x</em>), is linear.  The data have a constant rate of change or slope:
<em />(between the first two points):  <em>m</em> = (<em>y</em>₂ - <em /><em>y</em>₁)/(<em>x</em>₂ - <em>x</em>₁) = (22-18)/(-1--2) = 4/(-1+2) = 4/1 = 4.  The rate of change  between any two points is the same:
(between the last two points):<em>  m</em> = (34-30)/(2-1) = 4/1 = 4.

The second table, representing <em>g</em>(<em>x</em>), is exponential.  The data points are multiplied by the same constant between successive points.  2*2 = 4; 4*2= 8; 8*2 = 16, etc.
4 0
2 years ago
Simplify 3r+n2-r+5-2n+2
Ksenya-84 [330]

2r+7+2n+n2

Because I combined the ones with like terms.

8 0
3 years ago
Read 2 more answers
Can someone help me out ? Don't just guess the answer :(
Monica [59]
1) 2m+6 / m² + 7m - 12  +  (m+2)/(m+4)

= 2(m+3) / (m+4)(m+3)  + (m+2)/(m+4)

= 2/(m+4) + (m+2)/(m+4)

= 2+m+2 / (m+4)

= m+4 / m+4

= 1  [ Option A ]

Answer 2) 3/ (x+4)  + 7/ (x-3)

=  3(x-3) + 7(x+4)/ (x² +x - 12)

= 3x-9 + 7x + 28 / (x² +x - 12)

= 10x + 19 / (x² +x - 12)  [ Option A ]

Hope this helps!
5 0
3 years ago
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What is the 6th row of Pascal's triangle?
Grace [21]

Answer:

1, 6, 15, 20, 15, 6, 1

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