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YuriBujnov
@YuriBujnov
July 2022
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Найти числа, a,b c и d,если a:b 3/4:0,5, b:c = 1,2:1/3,c:d =5:2, а их среднее арифмитическое ровно 1,3
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Miks2107
Verified answer
A:b=3/4:0,5=1,5:1
b:c=1,2:1/3=3,6:1
c:d=5:2=2,5:1
(a+b+c+d)/4=1,3
d=x c=2,5x b=2,5*3,6x a=2,5*3,6*1,5x
(x+2,5x+9x+13,5x)=1,3*4
26x=5,2
x=0,2=d
c=2,5*0,2=0,5
b=0,5*3,6=1,8
a=1,8*1,5=2,7
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Answers & Comments
Verified answer
A:b=3/4:0,5=1,5:1b:c=1,2:1/3=3,6:1
c:d=5:2=2,5:1
(a+b+c+d)/4=1,3
d=x c=2,5x b=2,5*3,6x a=2,5*3,6*1,5x
(x+2,5x+9x+13,5x)=1,3*4
26x=5,2
x=0,2=d
c=2,5*0,2=0,5
b=0,5*3,6=1,8
a=1,8*1,5=2,7