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Alecsey [184]
3 years ago
12

What is the definition of a ray?

Mathematics
2 answers:
Gelneren [198K]3 years ago
4 0
A ray is a line with only 1 end.
AfilCa [17]3 years ago
3 0
A ray is a line that has only one endpoint. The rest of the line goes on forever
You might be interested in
Consider the quadratic equation x2 = 4x - 5. How many solutions does the equation have?
JulijaS [17]

Answer:

  • no real solutions
  • 2 complex solutions

Step-by-step explanation:

The equation can be rearranged to vertex form:

  x^2 -4x = -5 . . . . . . . . . subtract 4x

  x^2 -4x +4 = -5 +4 . . . . add 4

  (x -2)^2 = -1 . . . . . . . . . show the left side as a square

  x -2 = ±√-1 = ±i . . . . . . take the square root; the right side is imaginary

  x = 2 ± i . . . . . . . . . . . . . add 2. These are the complex solutions.

_____

<em>Comment on the question</em>

Every 2nd degree polynomial equation has two solutions. They may be real, complex, or (real and) identical. That is, there may be 0, 1, or 2 real solutions. This equation has 0 real solutions, because they are both complex.

3 0
3 years ago
Or which equation would x = 4 be a solution?
ElenaW [278]

2x+7=22\ \ \ \ |-7\\2x=15\ \ \ \ \ |:2\\x=7.4\neq4\\----------------------\\6x\div8=3\ \ \ \ |\cdot8\\6x=24\ \ \ \ |:6\\x=4\\-------------------\\8-3x=20\ \ \ \ |-8\\-3x=12\ \ \ \ |:(-3)\\x=-4\neq4\\---------------------\\2x+8=4\ \ \ \ \ |-8\\2x=-4\ \ \ \ \ |:2\\x=-2\neq4\\\\Answer:\ 6x\div8=3

Other method.

Enter the value of x for each equation and check the equality of the pages of the equation

2x+7=22\\L=2(4)+7=8+7=15;\qquad R=22\qquad L\neq R\\\\6x\div8=3\\L=6(4)\div8=24\div8=3;\qquad R=3;\qquad L=R\\\\8-3x=20\\L=8-3(4)=8-12=-4;\qquad R=20;\qquad L\neq R\\\\2x+8=4\\L=2(4)+8=8+8=16;\qquad R=4;\qquad L\neq R

6 0
3 years ago
Find the mean of 12,8,7,10,8,8,10<br><br> A.63 <br> B.12.6<br> C.9<br> D.7
elixir [45]
<h3>It'd be C. To find mean, you first add all the terms, than divide by how many terms there were. 12+8+7+10+8+8+10=63, and there are 7 terms, so 63÷7=9.</h3>
6 0
4 years ago
Read 2 more answers
Help ASAP please again and again​
AnnyKZ [126]

Answer:

14

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Pls Need Answer Now!!
iris [78.8K]

Answer:

Option B, 14.6 units

Step-by-step explanation:

<u>Step 1:  Find the distance of AB</u>

<u />AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

AB = \sqrt{(3 - 1)^2 + (5 - 3)^2}

AB = \sqrt{(2)^2 + (2)^2}

AB = 2\sqrt{2} or 2.83...

<u>Step 2:  Find the distance of BC</u>

BC = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

<u />BC = \sqrt{(3 -1)^2 + (-1 - 3)^2}

BC = \sqrt{(2)^2 + (-4)^2}

BC = \sqrt{4 + 16}

BC = \sqrt{20}

BC = 2\sqrt{5} or 4.47...

<u>Step 3:  Find the perimeter</u>

<em>AB is the same as AD and BC is the same as DC</em>

<em />2(AB) + 2(BC)

2(2.83) + 2(4.47)

5.66 + 8.94

14.6 units

Answer: Option B, 14.6 units

5 0
3 years ago
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