An non-example of a independent variable is how much money you make selling cookies , because it depends on the number of cookies you sell .
Answer:
Step-by-step explanation:
Brittany paints the room in x hours, completing 1/x of the room per hour.
Ashley paints the room in x+2 hours, completing 1/(x+2) of the room per hour.
Working together, they complete 1/x + 1/(x+2) = ⅐ of the room per hour.
7(x+2) + 7x = x(x+2)
14x + 15 = x^2 + 2x
x^2 - 12x - 15 = 0
x = [12 ±√(12²+60)]/2= 6±√51
6-√51 is an extraneous solution.
x = 6+√51 ≈ 13.14
Brittany paints the room in 12.14 hours
59$ mangotes
Ánd un aplle
Answer:
8.356 rounded to the nearest hundredth=8.360
6(0.25+2.5)-2
6(2.75)-2
16.5-2
=14.5
