Question

pls dau coroana plssss​

Answer 1

1. {x,y,z} d.p. {2,3,5}
x/2=y/3=z/5=k
x=2k
y=3k
z=5k
10k=120 => k=12
x=24 ; y=36 ; z=60

2. (a+b+c):3=54 => a+b+c= 162
{a,b,c} d.p. {14,15,25}
a/14=b/15=c/25=k
a=14k; b=15k; c=25k
54k=162 => k=3
a=52 ; b= 45 ; c=75

3. a)5x=15*7
x = 3*7=21
b)2x=20*1/5
x= 10/5 = 2
c) 0,2*0,2=0,01x
0,04=0,01x => x=4
d)11*2=x=22

4. ??

5. {a,b,c} d.p. {4,5,7}
a/4=b/5=c/7=k
a=4k
b=5k
c=7k
16k = 48 => k=3
a=12 ; b=15 ; c=21

6. {a,b,c} dp {2,3,4}
a/2=b/3=c/4=k
a=2k; b=3k; c=4k
9k=180 => k=20
a= 40; b=60; c=80

7. {x,y,z} d.p. {2,5,7}
x/2=y/5=z/7=k
x=2k; y=5k; z=7k
2k+25k+49k=760
76k=760
k=10
x=20; y=50; z=70