Question

ex 2
ex 3
ex 5
va rog eee foarte foarte urgent

DAU COROANA SI MULTUMIRI VA ROG....​

Answer 1

Răspuns:

Explicație pas cu pas:

2)

a)

a/m=7/5

a/m=b/n=c/n=7/5

a= 7m/5 , b= 7n/5 , c= 7p/5

(a+b+c) / (m+n+p) = ( 7m/5+7n/5+7p/5)/ (m+n+p)

= 7/5* (m+n+p) / (m+n+p)= 7/5

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b)

a= 2m/9 , b= 2n/9 ,c=2p/9

2/9*(m+n+p) / ( m+n+p)= 2/9

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c)

a/m=b/n=c/p=3/8

a= 3m/8  ,  b= 3n/8 ,c=3p/8

3/8*( m+n+p) /( m+n+p) = 3/8

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3)

a)

a/x=b/y=c/z= (a+b+c)/x+y+z) =4/5

a/x=4/5

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b)

b/y= 4/5

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c)

z/c=4/5

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5)

x/4=y/6= z/8=5/9

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x/4=5/9

9x=5*4

9x=20

x=20/9

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y/6=5/9

9y= 5*6

9y=30

y= 30/9

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z/8=5/9

9z= 5*8

9z=40

z= 40/9

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x+y+z= 20/9+30/9+40/9=90/9 =10