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melamori03 [73]
2 years ago
12

Are these functions or not?​

Mathematics
1 answer:
VLD [36.1K]2 years ago
6 0

Answers:

  1. Not a function
  2. Not a function
  3. Function
  4. Not a function

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

Explanation:

A function has any given input lead to <u>exactly one</u> output.

Relation 1 has the input "paper" lead to more than one output, which are the values 9 and -3. Therefore, relation 1 is not a function.

Relations 2 and 4 are similar stories.

---------

In contrast, relation 3 has each input lead to exactly one output, which is why we have a function here.

Put another way: a function cannot have the x coordinates repeat, but the y coordinates can repeat.

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What is the solution for 0.75x + 1.5 =10?
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Answer:

11.333333333333 (repeated)

Step-by-step explanation:

1.5 and 10 are like terms, so you need to put them together and keep x on one side by itself. This means that you need to subtract 1.5. The new equation will be .75x = 8.5. Then, you divide by .75. This will then give you the final result, x = 11.3 repeated

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30 gallons of red paint  &  20 gallons of blue paint

Step-by-step explanation:

The ratio of red to blue paint drops to make purple paint is 3 : 2

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After cross multiplication;

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brainly.com/question/11662922

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If sin(2x) = cos(x + 30"), what is the value of x?<br> 20°<br> 30°<br> 500<br> 1100
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That means a = 60

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