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Kobotan [32]
3 years ago
14

Please help me, im not good at math.

Mathematics
1 answer:
rewona [7]3 years ago
6 0
Piecewise functions are a group of sub-functions that apply to a certain interval of the independent variable. They may be continuous or discontinuous. A graph is discontinuous if the graph has some breaks in it. 

If you graph the piecewise functions, the graph would look like that in the picture. The values of x on the left of the graph are taken arbitrarily just to see the behavior of the function. The domain of the piecewise functions, in other words, is the coverage of its x-values. As long as the graph passes that certain x-coordinate, it is part of its domain.  Note that you use the '(' or ')' when it is not inclusive, while you use '[' or ']' if it is. The domain is inclusive when you only use ≤ or ≥, but not inclusive if it uses only < or >.

Therefore, the range is (2,8].

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Simplify the expression (combine like terms):<br> 6x + 12y + 5 + 2y + 8
ryzh [129]

Answer:

6x + 14y + 13

Step-by-step explanation:

6x + 12y + 5 + 2y + 8 \\(6x ) + (12y + 2y) + (5 + 8) \\ 6x + 14y + 13

4 0
3 years ago
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A cylinder has a radius of 14 inches and a height of 10 inches. A rectangular prism has
aliya0001 [1]

Answer:

61.973

Step-by-step explanation:

let the unknow side be x

surf of prism = 2*(8*8+8x+8x) = 2*(64+16x) = 128+ 32x

again, surface of cylinder = 2pi*r*(r+h) = 2 * pi * 14 * (14+10) = 672pi

now solve for x, when

128+32x = 672pi

5 0
3 years ago
Which of these polynomial equations is of least degree and has -1, 2, and 4 as three of its roots?
kvasek [131]

Answer:

x^3 - 5 x^2 + 2 x + 8 = 0

Step-by-step explanation:

Solve for x over the real numbers:

x^3 - 5 x^2 + 2 x + 8 = 0

The left hand side factors into a product with three terms:

(x - 4) (x - 2) (x + 1) = 0

Split into three equations:

x - 4 = 0 or x - 2 = 0 or x + 1 = 0

Add 4 to both sides:

x = 4 or x - 2 = 0 or x + 1 = 0

Add 2 to both sides:

x = 4 or x = 2 or x + 1 = 0

Subtract 1 from both sides:

Answer: x = 4 or x = 2 or x = -1

6 0
3 years ago
Read 2 more answers
-b-2&gt;8 solve the inequality
vlada-n [284]

Answer:

b < 10

Step-by-step explanation:

-b - 2 > 8

Add 2 to both sides.

-b > 10

Divide both sides by -1. When dividing by a negative, flip the inequality sign.

b < 10.

7 0
3 years ago
What is the area of a rectangle with a width of x^2+x+1 and a length of 3x^2-2x-1?
Nostrana [21]

Answer: width= 2x-1 and length= 3x+2

Step-by-step explanation: SOLUTION: Choose a possible dimensions of a rectangle with a width= 2x-1 and length= 3x+2 so that its area is greater than 153cm² a. W= 13 L= 15 b. W= 11 L= 20

6 0
2 years ago
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