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cupoosta [38]
3 years ago
8

Tell whether the relation is a function.

Mathematics
2 answers:
pshichka [43]3 years ago
8 0

Answer:

Step-by-step explanation:

The easiest way to tell if a relation is a function is to look at the x coordinates.  If none of them are the same in the set, then the relation is a function.  If any of the x values are used more than once in the set, it is only a relation.  This set uses -3 two times, so it is a relation.

PilotLPTM [1.2K]3 years ago
4 0

Answer:

It is not a function.  

Step-by-step explanation:

A function is a relation in which each input x has only one output y.

One visual way to tell the difference is to plot the relation and use the vertical line test.

If a vertical line for a  given value of x passes through more than one point, the relation is not a function.

We see in the diagram that the line x = -3  includes (-3,0) and (-3,4), so the relation is not a function.

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Last week, it rained g inches. This week, the amount of rain decreased by 5%. Which expressions represent the amount of rain tha
dybincka [34]

Answer:

The correct answers are:

0.95g

g - 0.05g

(1 - 0.05)g

Step-by-step explanation:

Amount of last week's rain = g inches

this week = 5% decrease on last week's amount

5% of last week's amount = 5/100 × g = 0.05g

∴ This week's amount of rain = 0.05g decrease

∴ Amount of rain this week = (Amount of rain last week) - 0.05g

∴ Amount of rain this week = g - 0.05g

This can be simplified by factorizing the common term "g"

g - 0.05g = g(1 - 0.05) = 0.95g

4 0
3 years ago
Please answer this question I need a answer tonight
Schach [20]
Now Steve, you can tap these into your calculator one by one,
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There are three (3) of them in the list.

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4 0
3 years ago
Read 2 more answers
A top-loading washing machine has a cylindrical basket that rotates about a vertical axis. The basket of one such machine starts
damaskus [11]

Answer:

n_{tot}=44rev

Step-by-step explanation:

In order to solve this problem we can make use of the following formula:

\theta=(\frac{\omega_{f}+\omega_{0}}{2})t

where θ is the total angle the basket has turned, ω is the angular velocity and t is the time.

Generally theta is written in radians and omega is written in radians per second. Now, since the revolutions are directly related to the radians and they want us to write our answer in revolutions, we can directly use the provided speeds in the formula, so we can rewrite it as:

n=(\frac{f_{f}+f_{0}}{2})t

where n represents the number of revolutions and f is the frequency at which the basket is turning.

The movement of the cylindrial basket can be split in two stages, when it accelerates and when it decelerates. So let's analye the first stage:

n=(\frac{4rev/s+0}{2})(9s)=18rev

and now let's analyze the second stage, where it decelerates, so we get:

n=(\frac{0rev/s+4rev/s}{2})(13s)=26rev

So now that we know how many revolutions the cylindrical basket will take as it accelerates and as it decelerates we can add them to get:

n=18rev+26rev=44rev

So the basket will turn a total of 44 revolutions during this 22s interval.

3 0
3 years ago
You randomly pick two numbers from 1 to 9 (including 1 and 9). A number that is chosen once could be chosen again. If at least o
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Assume that you only include whole numbers (1,2,3,4,5,6,7,8,9) and not 3.5 and such
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must be
1+x<5
3+x<5
solve each
1+x<5
subtract 1
x<4
set of answers are 1,2,3

3+x<5
subtract 3
x<2
set of answer is 1
so the possible numbers are
1,2,3
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probability=(total desired outcomes)/(total possible outcomes) so
disred outcomes=3
total possible=9
3/9=1/3
the probabiltiy is 1/3
7 0
3 years ago
=<br> Given f(x) 2x3 + kx + 6, and x + 2 is<br> a factor of f(x), then what is the value of k?
FinnZ [79.3K]

Answer:

Look

Step-by-step explanation:

best solution is ask ur mom

7 0
2 years ago
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