1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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>
You might be interested in
A masonry contractor is preparing an estimate for building a stone wall and gate. He estimates that the job will take a​ 40-hour
kodGreya [7K]

Solution: Estimated time for the work is 40 hour work week.

Estimated payment to 3 laborers working 40 hours at cost $14 per hour is:

3\times 40\times 14= $1680

Estimated payment to 6 masons working 40 hours at cost $24 per hour is:

6\times 40\times 24= $5760

Estimated cost of material = $3143

Contractor wishes to make a profit of $500

Therefore, the mathematical expression that will give the estimated cost of the job is:

Cost = 1680+5760+3143+500

The estimated total cost is:

Cost =$11083




5 0
3 years ago
Read 2 more answers
Round 345276 to the nearest thousand
TiliK225 [7]
Since there is no decimal point, the answer is 345276.
8 0
3 years ago
Read 2 more answers
Find the exact length of the curve. y2 = 4(x + 1)3, 0 ≤ x ≤ 1, y &gt; 0
mylen [45]
We can find this using the formula: L= ∫√1+ (y')² dx

First we want to solve for y by taking the 1/2 power of both sides:

y=(4(x+1)³)^1/2
y=2(x+1)^3/2

Now, we can take the derivative using the chain rule:

y'=3(x+1)^1/2

We can then square this, so it can be plugged directly into the formula:

(y')²=(3√x+1)²
<span>(y')²=9(x+1)
</span>(y')²=9x+9

We can then plug this into the formula:

L= ∫√1+9x+9 dx *I can't type in the bounds directly on the integral, but the upper bound is 1 and the lower bound is 0
L= ∫(9x+10)^1/2 dx *use u-substitution to solve
L= ∫u^1/2 (du/9)
L= 1/9 ∫u^1/2 du
L= 1/9[(2/3)u^3/2]
L= 2/27 [(9x+10)^3/2] *upper bound is 1 and lower bound is 0
L= 2/27 [19^3/2-10^3/2]
L= 2/27 [√6859 - √1000]
L=3.792318765

The length of the curve is 2/27 [√6859 - √1000] or <span>3.792318765 </span>units.
6 0
3 years ago
What number is the opposite of 98?
Anon25 [30]

Answer:

-98

Step-by-step explanation:

hope this is right

6 0
3 years ago
Read 2 more answers
Consider triangle QRS. The legs each have a length of 10 units. Triangle Q R S is shown. Angle Q S R is 90 degrees. The length o
LenKa [72]

Answer:

5/2

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • Write the fraction 9/50 as a decimal if needed round to the nearest hundredth
    6·2 answers
  • What is 69.12 rounded to the nearest tenth
    9·1 answer
  • For what value of x is the rational expression below when x is equal to 4? X+20/x+4
    7·1 answer
  • Please help I need to have this in by tonight
    10·2 answers
  • What is the boundedness
    11·1 answer
  • An apple has a mass of 32.06 grams. What is the mass of the apple rounded to the nearest tenth of a gram?
    15·1 answer
  • What is the gradient and y-intercept of a<br> line with equation y = 3x+2?
    8·1 answer
  • What is the value of x in the equation 4x – 2(x + 3) = 8? Show ALL steps in the space below:
    5·2 answers
  • Graph line y=-2x+5 with no x
    12·1 answer
  • What fraction of a clockwise revolution does the hour hand of a clock turn through, when it goes from a) 5 to 11? b)2 to 8? c)10
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!