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AnnZ [28]
3 years ago
8

Is (5, 10), (-8, 3), (-1, 7), (-5, 10) A Function ?

Mathematics
1 answer:
ankoles [38]3 years ago
6 0

Answer:

Step-by-step explanation:

Notice that the inputs {5, -8, -1, -5} are all different.  So we can immediately conclude that this is a function.

If the inputs were {5, -8, -1, 5}, this would not be a function, as the same input value (5) would result in two different outputs.

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Solve for the missing variable. Round to the nearest tenth.
zysi [14]

Answer:

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Step-by-step explanation:

Corresponding sides of these triangles are proportional, so you have ...

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  x² = 5·20 . . . . . . . cross multiply

  x = √100 = 10

and ...

  y/15 = 5/y

  y² = 15·5 . . . . . . cross multiply

  y = √75 ≈ 8.7
_____

For more on the subject, see ...

brainly.com/question/26276659

4 0
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aleksklad [387]
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3 years ago
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Step-by-step explanation:

from the figure, In \triangle ABC\ \text{and}\ \triangle ADE

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\therefore \text{two triangles are similar}

Thus we can write

\Rightarrow \dfrac{35}{x}=\dfrac{45}{45+45}\\\\\Rightarrow x=35\times \dfrac{90}{45}=35\times 2=70

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