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ladessa [460]
2 years ago
5

23+15=729+21=812+15=674+12=? ​

Mathematics
2 answers:
Sergeu [11.5K]2 years ago
6 0

Step-by-step explanation:

here are all the anwsers

ohaa [14]2 years ago
4 0
The total of 74+12 is equal to 86
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What is the overlap of Data Set 1 and Data Set 2?
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the sum of the digits of a two number is 14 .if 36 is substracted from the number,the places of the digits are reversed.find the
Taya2010 [7]
The number in the ones place= X
The number in the tenths place= y
y+x=14.
y=14-x

Original placement of numbers=10y+x
New placement of numbers(after subtraction of 36)= 10x+y

10y+ x-36=10x+y
Substitute y with 14-x
So we would get

10(14-x)+ x-36=10x+(14-x)
=140-10x+x-36=10x+14-x
After transposing we get
140-14-36=10x-x+10x-x
=90=18x
X=90/18
x=5

Y=14-x
=14-5
=9


So the two digit number is
10y+x
=90+5
=95
5 0
3 years ago
Need some help, please. :D
4vir4ik [10]

Answer:   (P.s its very hard to write special characters here, i hope this helped though)

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4 0
2 years ago
Students at a sports college choose activities for games.
Mila [183]

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