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sladkih [1.3K]
3 years ago
13

A new computer has a model number, a part number, and a serial number. The model number is assigned by the manufacturer to ident

ify the type of computer. The part number identifies one part of the smaller components that make up the computer. The serial number is unique to each computer produced and identifies it. Which relation is a function? (serial number, model number) (part number, serial number) (model number, part number) (model number, serial number)
Mathematics
2 answers:
Evgen [1.6K]3 years ago
7 0

Answer:

The relation which is a function as well is:

(serial number, model number)

Step-by-step explanation:

It is given that:

  • The model number is assigned by the manufacturer to identify the type of computer.
  • The part number identifies one part of the smaller components that make up the computer.
  • The serial number is unique to each computer produced and identifies it.

Now we are asked to find which relation is a function.

We know that a function is a relation such that it maps each element of one set to a single element of the other set.

In other words the image of an element is unique.

( i.e. there could not exist two image of an element whereas there could exist two elements such that both have the same image)

1)

(serial number,model number)

As corresponding two one serial number we will have a single model number.

Since serial number is unique.

so, each serial number will have a single model number.

Hence, the relation is a function.

2)

(part number, serial number)

As each part is used in different computers.

and hence, each part number can be mapped to mre than one serial number.

Hence, the relation is not a function.

3)

(model number,part number)

Since, the number of parts used to develop a computer are more.

As corresponding to each model number the number of parts are more than one, this means a model number will corresponds to so many part number and hence is not unique.

Hence, option 3) is not a function.

4)

(model number, serial number)

As corresponding to one model there may exist more than one computer system that has different serial number.

Hence, the image is not unique.

Hence, the relation is not a function.

kumpel [21]3 years ago
4 0
<span>(serial number, model number)

That's a function mapping each serial number to its model number.

 (part number, serial number)

That's not a function; the same part number is in computers with different serial numbers

</span><span> (model number, part number)
</span><span>
That one's a bit confusing.  Normally a given model would have more than one part number inside so this isn't a function.  But here the description says there's only one part number for each model, so that would be a function.

(model number, serial number)

Not a function, more than one serial number for a given model number.


</span>
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The <u>correct answer</u> is:

D) <span>if it's raining, then the humidity level is 100%; hypothesis: it is raining; conclusion: the humidity level is 100%.

Explanation:

The truth value of this conditional statement is true; if it is raining outside, that would mean the humidity level is 100%..

The hypothesis of a conditional statement is the "if" part.  In this statement, what follows "if" is "it's raining"; this is the hypothesis.

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$31.40.

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Since 6 oranges cost $3.00, we can divide to find the cost of one orange:

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If ten oranges are bought, this would cost 10(0.50)=$5.00.

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A group of 15 people are going to run a race. The top 8 will advance to the finals. Determine if the situation is a permutation
LUCKY_DIMON [66]

For the given situation we have a total of 259,459,200 permutations.

<h3>How many permutations are?</h3>

First, how we know that it is a permutation?

Because the order matters, we aren't only selecting 8 out of the 15 people, but these 8 selected also have an order (is not the same thing to finish the race first than fourth, for example).

Then we need to find the number of permutations, to do it, we need to find the numbers of options for each of the 8 positions.

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Then the total number of permutations (product between the numbers of options) is:

P = 15*14*13*12*11*10*9*8 = 259,459,200

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8 0
2 years ago
Can someone plz help me with this!
asambeis [7]

Answer:

(arranged from top to bottom)

System #3, where x=6

System #1, where x=4

System #7, where x=3

System #5, where x=2

System #2, where x=1

Step-by-step explanation:

System #1: x=4

2x+y=10\\x-3y=-2

To solve, start by isolating your first equation for y.

2x+y=10\\y=-2x+10

Now, plug this value of y into your second equation.

x-3(-2x+10)=-2\\x+6x-30=-2\\7x=28\\x=4

System #2: x=1

x+2y=5\\2x+y=4

Isolate your second equation for y.

2x+y=4\\y=-2x+4

Plug this value of y into your first equation.

x+2(-2x+4)=5\\x+(-4x)+8=5\\x-4x+8=5\\-3x=-3\\x=1

System #3: x=6

5x+y=33\\x=18-4y

Isolate your first equation for y.

5x+y=33\\y=-5x+33

Plug this value of y into your second equation.

x=18-4(-5x+33)\\x=18+20x-132\\-19x=-114\\x=6

System #4: all real numbers (not included in your diagram)

y=13-2x\\8x+4y=52

Plug your value of y into your second equation.

8x+4(13-2x)=52\\8x+52-8x=52\\0=0

<em>all real numbers are solutions</em>

System #5: x=2

x+3y=5\\6x-y=11

Isolate your second equation for y.

6x-y=11\\-y=-6x+11\\y=6x-11

Plug in your value of y to your first equation.

x+3(6x-11)=5\\x+18x-33=5\\19x=38\\x=2

System #6: no solution (not included in your diagram)

2x+y=10\\-6x-3y=-2

Isolate your first equation for y.

2x+y=10\\y=-2x+10

Plug your value of y into your second equation.

-6x-3(-2x+10)=-2\\-6x+6x-30=-2\\-30=-2

<em>no solution</em>

System #7: x=3

y=10+x\\2x+3y=45

Plug your value of y into your second equation.

2x+3(10+x)=45\\2x+30+3x=45\\5x=15\\x=3

3 0
3 years ago
Solve for x.<br> 4x - 36<br> 3x + 10
Anestetic [448]

Answer:

x = 46

Step-by-step explanation:

Since the angles are equal to each other, make the equations equal to each other.

4x - 36 = 3x + 10 and simplify

x - 36 = 10

x = 46

Hope this helps!

7 0
2 years ago
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