Answer:
x = 
Step-by-step explanation:
Let the number be x
x + 2x² = 10
Factorize x + 2x²
x(1 + 2x) = 10
Divide both sides by (1 + 2x)
x = 
Answer:
$15
Step-by-step explanation:
60x75%
60x0.75
45
60-45=15
Answer:
False
Step-by-step explanation:
The equation is equal to -24 = -19. That's not true
Answer:
so its D
Step-by-step explanation:
a is wrong becuase it does have 6
b is wrong becuase you make into 6 triangles
c is wrong becuase it does add up to 180 degrees