N = 4
(3)(4)-(2+4) = 12 - 6 = 6
She ate 10 cookies
1/3 of 30 is 10
Answer:
36 inches
Step-by-step explanation:
Just multipy 3 by 12.
If B is the midpoint of AC, then |AB| = |AC|.
|AB| = 3x + 2
|BC| = 5x - 10
Therefore we have the equation:
3x + 2 = 5x - 10 |subtract 2 from both sides
3x = 5x - 12 |subtract 5x from both sides
-2x = -12 |divide both sides by (-2)
x = 6
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