Answer:
<h2>-12</h2>
Step-by-step explanation:
-3 - 5 - 4
= -3 + (-5) + (-4)
= -8 + (-4)
= -12
<h3>#Let'slearn</h3>
Answer:
(-3,0) ; (1,0)
Step-by-step explanation:
We have to solve the associated equation:
-2x^2 -4x + 6 = 0
-x^2 - 2x + 3 = 0
x^2 + 2x -3 = 0
Δ/4 = 1 + 3 = 4
x1 = -1 + 2 = 1
x2 = -1 -2 = -3
Answer:
18 seconds
Step-by-step explanation:
5x9=45 so 2x9=18
Answer:
d) 4.
Step-by-step explanation:
Let Santiago be x years old today.
Then Juan is x + 8 years old.
In 4 years Santiago will be x + 4 years.
In 4 years Juan will be x + 12 years.
From the given information:
x + 4 = 0.5(x + 12)
x = 0.5x + 6 - 4
0.5x = 2
x = 2 / 0.5
x = 4.
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