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hammer [34]
3 years ago
8

What is 21 over 50 as a decimal

Mathematics
1 answer:
mel-nik [20]3 years ago
5 0
21 over 50 is

21/50.

The same thing, just put 21 on top, a line under it, and below that line, put the 50
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inna [77]

Answer:

Cost of One Journal =  $3.99

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Step-by-step explanation:

Let

Cost of One Journal = x

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18x+40y=95.42

Ms. Jacinto purchases 11 journals and 16 pencils for $53.33.

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Now solving these equations to find the value of x

18x+40y=95.42--eq(1)\\11x+16y=53.33--eq(2)

Multiply eq(1) with 2 and eq(2) with 5

36x+80y=190.84\\55x+80y=266.65\\-\:\:\:\:-\:\:\:\;\:\:\:\:\:\:\:-\\---------\\-19x=-75.81\\x=\frac{-75.81}{-19}\\x=3.99\\

We get the value of x is: x=3.99

Now, putting value of x in equation 1 to find value of y.

18x+40y=95.42\\18(3.99)+40y=95.42\\71.82+40y=95.42\\40y=95.42-71.82\\40y=23.6\\y=\frac{23.6}{40}\\y= 0.59

So, we get the value of y: y = 0.59

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3 years ago
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