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valkas [14]
3 years ago
5

30% of what number is 70

Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
233 1/3

you start with .3x = 70, as this is the sentence given, solving for x.
divide both sides by .3, and you get x
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An object is 3.6 m from the pinhole. Its image is 4.2 cm from the opposite side of the pinhole. The height of the image is 0.8 c
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Answer:

Height of the object is 68.6 cm.

Step-by-step explanation:

The height of the object can be determined by:

\frac{object distance from pinhole}{image distance from pinhole} = \frac{object height}{image height}

From the given question;

object distance from pinhole = 3.6 m = 360 cm

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3 years ago
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8 0
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Read 2 more answers
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