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Umnica [9.8K]
3 years ago
12

A new pencil weighs 25 grams. After the pencil has been used for a while, it weighs 2 decagrams. How many grams of the pencil ha

ve been used up?
Mathematics
1 answer:
ivann1987 [24]3 years ago
8 0
Well 1 decagram is 10 grams and 10×2 is 20 so 20 from 25 is 5 so 5 grams was used
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Answer:

I'm not sure what you want me to answer from this, so I solved for every variable:

Angle A: 83°

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Step-by-step explanation:

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Since the sum of the interior angles of a triangle ALWAYS equal 180°, we can solve for angle A as follows:

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Here, we use the sin rule for finding sides, since we know all of the angles as well as one side:

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\frac{a}{sin(A)} =\frac{c}{sin(C)} \\\frac{8}{sin(83)}=\frac{c}{sin(46)} \\8.06=\frac{c}{0.72} \\5.8=c

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Step-by-step explanation:

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