Question

ajutorrrrr repede pana la 14:15​

Answer 1

Răspuns:

Explicație pas cu pas:

încerc cu x-y=15

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{ x, y ,z) ip { 2,5,6)

K= CONSTANTA

2x+5y+6z= K

2x=k

x= k/2

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5y=k

y= k/5

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6z= k

z= k/6

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x-y=15

⁵⁾k/2-²⁾ k/5=¹⁰⁾15

5k-2k=150

3k= 150

k=150:3

k=50

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înlocuim k cu ..50

x= k/2=50/2=25

y= k/5= 50/5=10

z= k/6=50/6=8,(6)

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3)

4 min ........100 rotatii

6min .........x rotatii

x= (6*100)/4

x= 600/4

x= 150 rotatii

Answer 2

• Exercitiul 2 )

$(x,y,z) i.p(2,5,6)$

$x-y=15$

$x=\frac{k}{2}$  

$y=\frac{k}{5}$

$z=\frac{k}{6}$

$x-y=15 => \frac{k}{2} -\frac{k}{5} =15$

$3k=15*10$ $=> 3k=150$

$k=\frac{150}{3} =50$

$x=\frac{k}{2} =\frac{50}{2} =25$

$y=\frac{k}{5} =\frac{50}{5}=10$

$z=\frac{k}{6} =\frac{50}{6} =8,(3)$

Numerele sunt : 25; 10 ; 8,(3)

• Exercitiul 3 )

Necunoscuta o notam cu x

4 min (minute) ............... 100 rotatii

6 min (minute).................  x

x=$\frac{6*100}{4}$ = $\frac{600}{4}$ = $=> x=150$

In 6 minute roata face 150 de rotatii .