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Hitman42 [59]
2 years ago
13

The perimeter of a triangle is 90 cm.

Mathematics
2 answers:
harkovskaia [24]2 years ago
4 0
Can you work out what one share is
If you don’t know comment
salantis [7]2 years ago
3 0

Let's call one ratio = x

So, the sides are 3x, 5x and 7x respectively.

Since the perimeter is 90 cm, the sum of 3 sides = 90 cm

-> 3x + 5x + 7x = 90 cm

-> 15x = 90cm
-> x = 6cm.

So, the 3 sides are 3x6, 5x6 and 7x6 -> 18,30 and 42.

Recheck : 18 + 30 + 42 = 90

18:30:42 = 3:5:7 (all divided by 6)

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What is 2.161616 as a fraction?
Komok [63]

repeating fraction, nice

2.16161616...=2+0.16161616...
solve the repeating part
let's say x=0.16161616
2 places repeat, multiply x by 10^2 or 100
100x=16.161616

now subtract x from taht
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so
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2+16/99 is the fraction
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2.161616=214/99
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3 years ago
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