Let x be the amount of Columbian coffee in the mixture and y the amount of Sumatra coffee in the mixture, then
x + y = 1 . . . (1)
9.25x + 14.25y = 12.50 . . . (2)
(1) x 9.25 => 9.25x + 9.25y = 9.25 . . . (3)
(2) - (3) => 5y = 3.25 => y = 3.25/5 = 0.65
From (1), x + 0.65 = 1 => x = 1 - 0.65 = 0.35
1 pound of the mixture contains 0.35 Columbian coffee and 0.65 Sumatra coffee
Therefore, 12 pounds of the mixture will contain 0.35 x 12 = 4.2 pounds of Columbian coffee and 0.65 x 12 = 7.8 pounds of Sumatra coffee
Answer:
-31
Step-by-step explanation:
hmmm
you go what is around parentheses but there as none so we'll just go with subtracting -9+-10 which will be which will be -19 then add and subtract -19 by 12 and thats -7
so asdd tho up and youll get -31
Answer:
He had $56.
Step-by-step explanation:
$46 + $10 = $56
you can also solve it like this:
x = 46 + 10
x = 56
Answer:
$7 per hour
Step-by-step explanation:
(128-86)/6 = 7
That would be A. The original xy coordinates are being moved to the left by three and up 5.