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3 years ago

Does the equation below represent a relation, a function, both a relation and a function, or neither a relation nor function

Mathematics

1 answer:

Jet001 [13]3 years ago

4 0

Answer:

A. neither a relation nor a function

Step-by-step explanation:

A relation between two sets is a collection of ordered pairs containing one object from each set.

A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.

Quadratic equations are not functions. Quadratic equations are not a function because they touch two points that is on the same y-axis. Furthermore, if they are two points that have the same x axis, then it is not a function either. It doesn't have a relation either because there are two outputs that are the same by the x axis for 3x^2 - 9x + 20. Those are x = 1 and x = 2. For proof, you can plug both of them in.

3(1)^2 - 9(1) + 20 = 14

3(2)^2 - 9(2)+ 20 = 14

Both answers have 14 as the y-axis/output. This proves that this quadratic equation is not a relation either. Therefore, this equation is neither a relation nor a function.

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An object is dropped from 43 feet below the tip of the pinnacle atop a 527-ft tall building. The height h of the object after t

Marizza181 [45]

Answer:

5.5 seconds

Step-by-step explanation:

The function that gives the height of the object after t seconds falling is:

h = -16t^2 + 484.

To find the time when the object reaches the ground, we just need to use the value of h = 0 in the equation, and then find the value of t:

0 = -16t^2 + 484.

16t^2 = 484

t^2 = 30.25

t = 5.5 seconds

So the object will reach the ground after 5.5 seconds

5 0

3 years ago

Read 2 more answers

A graphic designer chose a base font size and represented it as 1 on the scale. he then listed some consecutive scale sizes. two

garik1379 [7]

Answer:

3.24

Step-by-step explanation:

You would use the two fonts given to find the scale factor.

So the scale factor would be 10.4976/5.832 = 1.8

So if the scale factor is 1.8 we can use that to find the font size just before that. To do this you would divide the font size by the scale factor.

5.832/1.8 = 3.24

The font size just before 5832 is 3.24.

Hope this helps, if there is an error in my work please correct me.

4 0

3 years ago

Justin wants his new treehouse to blend in with the leaves, so he decides to paint it green. He mixes some white paint and green

spayn [35]

Answer:

C. neither. the roof and walls are the same shade of green

Step-by-step explanation:

<u>The first batch:</u>

Some white and some green

<u>The second batch:</u>

Triple amount of white and triple amount of green

As we see the ratio of white to green has not changed

Therefore there won't be any difference in painting

Correct answer choice is C.

8 0

3 years ago

- 10 x + 4 = 11.3x i don’t know the answer

lubasha [3.4K]

Answer: x= 0.18779342

Step-by-step explanation:

3 0

3 years ago

Rescarchers are designing an experiment to compare two different types of running shoes, A and B, to investigate which type is b

allochka39001 [22]

Answer:

A.) Blocking occurs in an experiment when a certain experimental unit is divided or split into groups based on a certain criteria. In the experiment above, the experiment was blocked for class of runner, either professional or recreational. This is essential in other to limit the possible variability in our experiment. It is very possible thatvtve response of each class of runner may differ, therefore, it good practice to block for class of runner in other to contain the variation.

B.) Randomizing the type of shoe being worn by the runner ensures that we have given each runner an equal chance of selecting any type of shoe available,thereby eliminating biases which might emanate from fixing shoe type for each runner.

C.) Replication could simply be defined as the application of a certain treatment on more than one experimental unit. In the experiment above, by blocking for class of runner, hence having the professional and recreational units, and treatment applied to each experimental unit, Hence giving the experimenter the chance of controlling variation in the experiment.

Step-by-step explanation:

8 0

4 years ago