Answer:
x=-6
Step-by-step explanation:
3(x+4)=2x+6
3x+12=2x+6
x+12=6
x=-6
Answer:
It is A ig.
Step-by-step explanation:
Answer:
70
Step-by-step explanation:
Answer:
x = 4, -1.5
Step-by-step explanation:
2x² - 5x - 12 = 0
2x² - 8x + 3x - 12 = 0
2x(x - 4) + 3(x - 4) = 0
(x - 4)(2x + 3) = 0
x = 4, -1.5
The graph cuts the x-axis at x = 4 and x = -1.5
Let Alex (the youngest) be n
Sam is n+3 because he is three years older
George is n+5 because he is 2 years older than Sam (n+3 +2) = n +5
All their ages summed = 35
So
n + n +3 + n + 5 = 35
Combine like terms
3n + 8 = 35
<u> - 8 -8 </u> subtract 8 from both sides of the equation
<u>3n </u> =<u> 27</u>
3 3 divide both sides by 3 and get n= 9
So Alex is 9
Sam is 12 since he is 3 years older than Akex
George is 14 since he is 2 years older than Sam
9 + 12 + 14 = 35
