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Veronika [31]
3 years ago
10

I thought the answer's 102, but it's not, and I'm not sure how to get the correct answer.

Mathematics
1 answer:
MissTica3 years ago
7 0
Hi

I used another place to type my answer because I don't think Brainly has all the tools I need.


I hope this finally help and I am sorry for my laziness :)

As always, I am here to help! 

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Answer:

  1. 10% of the remaining sand
  2. You had 5 ft of sand
  3. So y=5(.10(x))
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The vertices of a sandbox are P(12,14), Q(12,17), R(16,17), and S(16,14). The coordinates are measured in feet. What is the peri
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A prism with a volume of 148 cubic cm is dilated by a factor of 5.5.
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Of the 1,000 students in a local college, 420 own brand X mobile phones and 580 own brand Y mobile phones. Of these students, 80
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Read 2 more answers
HELP.... please??????????????
Nostrana [21]

Answers:

Functions

  • y = -x+11
  • y = 2x^2-6x+4
  • y = -7

Not functions

  • x = 3
  • x^2+y^2 = 81
  • y^2 = -5x-12

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

Explanation:

A function is possible if and only if any given x input leads to exactly one y output.

For something like x^2+y^2 = 81, we can see that x = 0 leads to either y = 9 or y = -9. So this would <u>not</u> be a function. We would need x to pair with only y value to have it be a function.

We have the same thing going on with y^2 = -5x-12 as well.

For anything of the form x = k, where k is any real number, this is also not a function. We have one single input only and it leads to infinitely many outputs. So in a sense, this is even worse compared to the other examples.

-----------------

In summary, we have these three non-functions:

  • x = 3
  • x^2+y^2 = 81
  • y^2 = -5x-12

Everything else is a function. You can use the vertical line test as a visual way to check.

8 0
3 years ago
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