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3 years ago

The screen on briannas new phone is 2.85 centimeters long. what mixed number represents the length of the phone screen?

2 answers:

8 0

We know that
the number $2.85$ is equal to

$2.85=2+0.85$

$0.85$ is equal to

$\frac{85}{100}$
divide by 5 both members

$\frac{85}{100} = \frac{17}{20}$

so
$2.85=2 \frac{17}{20}$

the answer is
$2 \frac{17}{20}$

frez [133]3 years ago

7 0

The first step is writing the number as a fraction: 2.85=2.85/1 Then we multiply both top and bottom with 100: (2.85)*100/1*100=285/100 Then we simplify the fraction by dividing the top and the bottom with the same number (the results must be whole numbers).In our case we divide with 5: 285:5/100/5=57/20 So, 2.85 can be written as a fraction as: 57/20. Next and final step is to write this fraction as a whole number: 57/20=(20+20+17)/20=20/20+20/20+17/20=1+1+17/20=2 17/20 So, the length of the cellphone is 2 17/20.

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