The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
Answer:
I think that its x^2 + y^2 = 0.
I could be wrong...
Answer:
12 = 5k/2
24 = 5k
Step-by-step explanation:
Raul is making chocolate chip pancakes.
The number of chocolate chips he uses is proportional to how many ounces of mix he makes.
Hence,
Chocolate chips ∝ Number of Ounces
Chocolate chips = c
Number of Ounces = m
= cm
c = km
Where k = Constant of Proportionality
The recipe said that for every 2 1/2 ounces of the mix, 12 chocolate chips be added.
Hence
12 = 21/2 × k
12 = 5/2 × k
12 = 5k/2
Cross multiply
12 × 2 = 5k
24 = 5k
The equation that represents the relationship between c the number of chocolate chips and m the number of ounces is
12 = 5k/2
24 = 5k
(5,-3)(-2,9)
slope(m) = (y2 - y1) / (x2 - x1)
slope(m) = (9 - (-3) / (-2 - 5) = (9 + 3) / -7 = - 12/7
y - y1 = m(x - x1)....point slope form
slope(m) = -12/7
(5,-3)...x1 = 5 and y1 = -3
now we sub...and pay close attention to ur signs
y - (-3) = -12/7(x - 5).....we are not done yet...
y + 3 = -12/7(x - 5) <== ur answer
Answer: 74 and 79
Step-by-step explanation:
