Question

am nevoie la 5,6,7plssss​

Answer 1

Răspuns:

Explicație pas cu pas:

5)

K=factor de proportionalitate

a= prima bucata

b= a doua bucata

a/3=K→a=3K

b/7=K→b= 7K

3K+7K= 140

10K=140

K= 140:10

K=14

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a= K= 3*14=42 m( prima bucata)

b=7K=7*14=98 m (a doua bucata )

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6)

a= primulunghi

b= al doilea unghi

c= al treilea unghi

d= al patrulea unghi

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a+b+c+d= 360°

K= factor de proportionalitate

a/2=b/4=c/6=d/8=K

a=2K

b=4K

c=6K

d= 8K

2K+4K+6K+8K= 360 °

20K=360

K=360:20

K= 18°

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a=2K=2*18=36°

b=4K= 4*18= 72°

c=6K= 6*18=108°

d= 8K= 8*18=144°

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7)

a=primul numar

b=al doilea numar

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K= factor de poportionalitate

a=K/2

b=K/5

⁵⁾K/2+²⁾K/5=¹⁰⁾42

5K+2K= 420

7K=420

K=420:7

K=60

K/2=60/2=30 (primul nr)

K/5=60:5=12 (al doilea nr)

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