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ohaa [14]
3 years ago
14

Please help me!! how do i solve this?

Mathematics
1 answer:
Lostsunrise [7]3 years ago
8 0

Answer:

  21

Step-by-step explanation:

Left-side numbers are proportional to right-side numbers:

  ?/14 = 12/8

  ? = 14(12/8) = 21

The missing length is 21.

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(28 POINTS)
cestrela7 [59]

Answer:

(a) -\sqrt{10}y

(b) -\sqrt{3}y

Step-by-step explanation:

(a) \sqrt{10y^{2}} can also be written as \sqrt{10} x \sqrt{y^{2}}

the \sqrt{y^{2}} = ± y

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since it was given that y < 0 , then the factor will be -\sqrt{10}y

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