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stepan [7]
3 years ago
5

Is this the relation R:={(2,1),(3,1),(5,5),(7,5)} a function?

Mathematics
1 answer:
fredd [130]3 years ago
7 0
<h3>Answer: Yes, it is a function</h3>

This is a function because there are no x values that repeat.

If we had repeated x values, then this would mean a certain input x leads to multiple outputs y, and that would not make it a function.

For instance, if we had (2,1) and (2,2) at the same time, then the input x = 2 leads to multiple outputs y = 1 and y = 2 at the same time. A function would not be possible in this example.

A function is only possible if any input x leads to exactly one output y. It is possible for y to repeat itself and still have a function.

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seraphim [82]
12x - 6y + 9z - (-x - 3z + 6y) = 12x - 6y + 9z + x + 3z - 6y = 13x - 12y + 12z
4 0
3 years ago
Joaquin wants to make his famous chocolate chip cookies to bring to his friend's birthday party. The original recipe serves 8 pe
Valentin [98]

Answer: He will need 1 1/4 cups of butter

Step-by-step explanation:

1. We can do 28/8 to find how much we need to multiply our 1/2 cup of butter to keep the ratio of people to cups of butter the same. 28/8= 3 1/2

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3 0
2 years ago
Help
VladimirAG [237]
<h3>Answer:  7.4 hours</h3>

==========================================================

Explanation:

Add up the percentage values:

25+20+6+6+6 = 63

This means 63% of the trip was driven by anyone but Dan. That must mean 100-63 = 37% of the trip is how much Dan drove.

Apply this percentage to the 20 hour duration

37% of 20 = 0.37*20 = 7.4 hours represents how long Dan drove.

extra notes:

  • 7.4 hours = 7 hours, 24 minutes because 0.4 hours = 0.4*60 = 24 minutes
  • 7.4 hours = 7 hrs + 24 min = 7*60+24 = 444 minutes
3 0
3 years ago
A) 30 : 1, 2, 3, ___,10,15,30 20:1,2,4,- 20 Common Factors:​
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Answer:

a)30-1,2,3,5,6,10,15,30

b)20-1,2,4,5,10,20

Step-by-step explanation:

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3 years ago
Read 2 more answers
Mary sells fruit with four of her friends. If the earnings are divided evenly, how
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Answer:

$150

Step-by-step explanation:

Mary+4 friends=5 people

5 people x $30 each person = 150 in total

$150

4 0
3 years ago
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