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lesya692 [45]
3 years ago
10

Find The Sum. 6 2/3 + 1 5/6=

Mathematics
2 answers:
patriot [66]3 years ago
5 0
6 2/3 + 1 5/6 = 8 1/2

i am a mathematics teacher. if anything to ask please pm me
Svetlanka [38]3 years ago
4 0
You first turn both fractions into improper fractions. then you get 20/3 and 11/6. afterthat multiply 20/3 by 2 because you need the same denominator as 11/6. so that will be 40/6. then add 40/6 and 11/6 = 51/6. Lastly turn 51/6 into a mixed number by dividing 51÷6= 8.5 meaning the answer would be 8 and 1/2
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Lera25 [3.4K]
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Hope this helps!
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3 years ago
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Delicious77 [7]

Step-by-step explanation:

To solve this question I would use the sin rule.

The sin rule states that

\frac{a}{ \sin(a) }  =  \frac{b}{ \sin(b)  }

Therefore if you substitute in your numbers you get:

\frac{a}{ \sin(90) }  =  \frac{15}{ \sin(60) }

If you rearrange that you get:

a =  \frac{15}{ \sin(60) }  \times  \sin(90)

Therefore a = 17.3 Inches (to 3 sf)

This can also be done with basic trigonometry where you would get

\sin(60)  =  \frac{15}{h}

Rearranging to

h =  \frac{15}{ \sin(60) }

meaning the answer is 13.7 inches

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