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evablogger [386]
3 years ago
15

12 Explain A bag includes one number card each for the numbers 1-25. Each of

Mathematics
1 answer:
Alex3 years ago
8 0

Answer:

Let us say the domain in the first case, has the numbers. And the co-domain has the students, .

Now for a relation to be a function, the input should have exactly one output, which is true in this case because each number is associated (picked up by) with only one student.

The second condition is that no element in the domain should be left without an output. This is taken care by the equal number of students and the cards. 25 cards and 25 students. And they pick exactly one card. So all the cards get picked.

Note that this function is one-one and onto in the sense that each input has different outputs and no element in the co domain is left without an image in the domain. Since this is an one-one onto function inverse should exist. If the inverse exists, then the domain and co domain can be interchanged. i.e., Students become the domain and the cards co-domain, exactly like Mario claimed. So, both are correct!

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pashok25 [27]

Answer:

$84 per person because if multiply 84 by 4 its 168

4 0
2 years ago
Read 2 more answers
What is the solution to the equation 1/4 X -1/8 equals 7/8+1/2 X?
vodomira [7]

Answer:

x=-4

Step-by-step explanation:

1/4x-1/8=7/8+1/2x

2x-1=7+4x

2x-4x=7+1

-2x+8

7 0
3 years ago
If two sides of one triangle are proportional to two sides of another and included angles are equal, then the triangles are simi
tiny-mole [99]
Yes the triangles are similar. It’s true
8 0
3 years ago
Graph the system of equations. Then determine whether the system has no solution, one solution, or infinitely many solutions. If
natima [27]

Answer:

  d)  one solution; (4, 1)

Step-by-step explanation:

It often works well to follow problem directions. A graph is attached, showing the one solution to be (4, 1).

_____

You know there will be one solution because the lines have different slopes. Each is in the form ...

  y = mx + b

where m is the slope and b is the y-intercept.

The first line has slope -1 and y-intercept +5; the second line has slope 1 and y-intercept -3. The slope is the number of units of "rise" for each unit of "run", so it can be convenient to graph these by starting at the y-intercept and plotting points with those rise and run from the point you know.

6 0
3 years ago
Wait so the sum of interior angles
Amiraneli [1.4K]
<h3>Answer:   1260</h3>

====================================================

Work Shown:

n = number of sides = 9

S = sum of the interior angles of any polygon with n sides

S = 180(n-2)

S = 180(9-2)

S = 180(7)

S = 1260

8 0
2 years ago
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