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murzikaleks [220]
2 years ago
13

3 A piece of ibbon of lengh 84 cm is divided

Mathematics
2 answers:
earnstyle [38]2 years ago
8 0

Answer:

49cm

Step-by-step explanation:

1x+4x+7x=84

12x=84

X=7

4*7=28

7*7=49

So we can see 49cm is the longest.

xxMikexx [17]2 years ago
3 0

Add the 3 ratio portions together: 1 + 4 + 7 = 12

Divide total length by 12:

84/12 = 7

Multiply each ratio portion by 7:

1 x 7 = 7

4 x 7 = 28

7 x 7 = 49

The longest piece is 49 cm

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A human hair is approximately 40 microns (um) wide. If 1 um is equal to 10
Natasha2012 [34]

Answer:

D 40,000nm

Step-by-step explanation: 1nm/10^-9m * 10^-6/1um = 10^3 nm/um

Therefore in 40 microns there are:

40um * 10^3 nm/um = 40 * 10^3 nm = 40,000 nm

5 0
2 years ago
Does anyone know a quick method to divide a whole number with a decimal
alina1380 [7]
<h2>Answer_use this method </h2>

d =  \frac{d(10 {}^{k + p}  - 10 {}^{k}) }{(10 {}^{k + p}  - 10 {}^{k})}

where

  • d=is the given decimal
  • k=is the number of terminating digits
  • p=is the number of repeating digits

Step-by-step explanation:

Greetings !

use the above formula to change any decimal into fraction form

Thus, plug in the value and solve

Hope it helps !

8 0
2 years ago
The value of x when 2x+12/7=3x+5/4
Murrr4er [49]

Answer:

x =  \frac{13}{28}

For further explanation see the picture attached...

3 0
3 years ago
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3 0
3 years ago
give an example of a compoud event, then explain how we would find the probability of those compound events
Brilliant_brown [7]
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(6/6) or 1 :P

Now to roll a sum of seven only one unique number can follow the first so the probability of getting that unique number so that you have a sum of seven is:

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This is a compound event because two thing must happen and you multiply their respective probabilities to get the probability of the compound even..

(6/6)(1/6)=6/36=1/6
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3 years ago
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