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Paraphin [41]
3 years ago
5

Which relation is a function?

Mathematics
1 answer:
adoni [48]3 years ago
5 0

Answer:

  • The second graph, top right

Step-by-step explanation:

#1, top left

  • Has repeating x- values at x = -2, not a function

#2, top right

  • No repeat, input or outputs, is a function

#3, bottom left

  • Has repeating x- values at x = 0, not a function

#4, bottom right

  • Has repeating x- values at x = -1, not a function
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4 years ago
I need help quick! Help me plz!
tankabanditka [31]

Answer:

In interval notation:

Domain: [1, 9]

Range: [2, 7]

Step-by-step explanation:

The domain of a function is all off the possible input (x) values, and the range is all of the possible output values (y). All of the input and output values are already given in the table.

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3 years ago
suppose that incomes of families in Newport Harbor are normally distributed with a mean of $750,000 and a standard deviation of
denis23 [38]

Answer: 0.345

Step-by-step explanation:

Given : The incomes of families in Newport Harbor are normally distributed with Mean : \mu=\$ 750,000 and Standard deviation : \sigma= $250,000

Samples size : n=4

Let x be the random variable that represents the incomes of families in Newport Harbor.

The z-statistic :-

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x= $800,000

z=\dfrac{800000-750000}{\dfrac{250000}{\sqrt{4}}}=0.4

By using the standard normal distribution table , we have

The probability that the average income of these 4 families exceeds $800,000 :-

P(x>80,000)=P(z>0.4)=1-P(z\leq0.4)\\\\=1-0.6554217=0.3445783\approx0.345

Hence, the probability that the average income of these 4 families exceeds $800,000 =0.345

6 0
4 years ago
The price of an item has been reduced by 65%. The original price was $55. Find the price now
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The price is now 22$
3 0
3 years ago
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Does this graph represent a function? Why or why not?
DedPeter [7]

Answer: C

Step-by-step explanation: For a function, each x-coordinate corresponds to exactly one y-coordinate.

To determine whether the graph shown here

is a function, we can use the vertical line test.

The vertical line test tells us that if each x-coordinate on the graph corresponds to exactly one y-coordinate, then any vertical line that we draw on the graph should hit the graph at only one point.

For the graph show here, any vertical line that you draw with hit the graph at only one point which means it does pass the vertical line test.

So this graph is a <em>function</em>.

8 0
4 years ago
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