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Vitek1552 [10]
3 years ago
10

421 3/50 - 212 9/10 =

Mathematics
2 answers:
Gekata [30.6K]3 years ago
6 0

Answer:

421 3/50 - 212 9/10 =  208.16 or 5204/25

Step-by-step explanation:

To solve the expressions you could change the values into an improper fraction to solve easily

421  3/50 - 212 9/10 =

421  3/50 = 421 × 50 + 3 / 50 =  21053/50

212 9/10 = 212 × 10 + 9 / 10 = 2129/10

subtract the fractions as follows

21053/50 - 2129/10 =

common factor of the denominator is 50

21053 - 10645 / 50 =

subtract 10645 from 21053

10408/50 =  5204/25  in fraction or 208.16 in decimal

solong [7]3 years ago
4 0
The easiest way to go about this is to change the fractions into decimals.
3/50 = 0.6
9/10 = 0.9
Then you would just subtract the values.
421.6 - 212.9 = 208.7
Hope this helps!
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Step-by-step explanation:

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Step-by-step explanation:

ABC is a right angled triangle. ∠A = 90°, from the figure.

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Hence, the length of the side AC = rh

Now, to compute the length of AB, we use Cos B.

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Hence, the length of the side AB = sh

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⇒ Cos C = $ \frac{rh}{h} $

Therefore, Cos C = r

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