Quel est le signe de a ,sachant que le produit (-2)x(-a)x(-7,56) est positif?

i believe

step-by-step explanation:

from my conclusion c

5x+2x=49

7x=49

x=7. 35 apples

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

angle efh= angle egh