Answer:Planting trees on 7 million hectares of land and purchasing 20 million hectares of land
Step-by-step explanation:
Add the last two equations to eliminate <em>x</em> :
(<em>x</em> - 2<em>y</em> - 3<em>z</em>) + (- <em>x</em> + <em>y</em> + 2<em>z</em>) = 0 + 3
- <em>y</em> - <em>z</em> = 3
<em>y</em> + <em>z</em> = -3
Subtract this from the first equation to eliminate <em>z</em>, then solve for <em>y</em> :
(2<em>y</em> + <em>z</em>) - (<em>y</em> + <em>z</em>) = -8 - (-3)
<em>y</em> = -5
Plug this into the first equation to solve for <em>z</em> :
2(-5) + <em>z</em> = -8
<em>z</em> = 2
Plug both of these into either the second or third equations to solve for <em>x</em> :
<em>x</em> - 2(-5) - 3(2) = 0
<em>x</em> = -4
Answer:
$25.55
Step-by-step explanation:
7.30*2.50=18.25
7.30+18.25=25.55
Answer: 2(x+1)
Step-by-step explanation: free points right?
Step-by-step explanation:
PRIMERO CONVIERTES MINUTOS A HORAS
15 MIN = 0.25 h
LUEGO CON LA ECUACIÓN DE GALILEI:
<em>x</em> = 6.5 mi/0.25 h = 26 mi
