Answer:
-9
14≅ -0.6428571
Step-by-step explanation:
This is a combination problem, since order does not matter. Specifically, it is an 18- choose - 4.
₁₈C₄ = 18! ÷ (4!(18-4)!
= 18! ÷ (4! (14!)) The 14! cancels out in the numerator/denominator
= 18 x 17 x 16 x 15 ÷ (4 x 3 x 2)
= 3,060
Answer:
x= -9/11
or alternative form:
x= 0.81
Step-by-step explanation:
2x4-3x3-20x-21=x-3
Its how much $$ they made minus the money they spent. The difference, or sum, is their profit