15 POINTS PLEASE HELP
1 answer:
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Answer:
(x, y) = (3, 5/2)
Step-by-step explanation:
I'll solve by elimination here. If you invert the second equation and add it to the first, 2y and -2y would cancel out.
Now just add those from top to bottom.
Nothing else needs to be done for that part. Now, you can pick either equation and use the known value of x to solve for y.
(x, y) = (3, 5/2)
Answer:
The amount of rubbery jello=5.038 ounce
Dried fish stick = 4.886 ounce
Mystery meat = 1.526 ounce.
Step-by-step explanation:
Solutions/Explanation: (a) Suppose the amount of rubbery jello = ounce,
The dried fish sticks amount to be = ounce
The amount of mystery meat = ounce.
Specification of the ingredients
Rubbery jello has: Calories=10 Cal/ounce, Protien=1 gram/ounce, Vitamin C= 30 mg/ounce
Dried fish sticks: Calories=50 Cal/ounce, Protien=3 grams/ounce, Vitamin C=10 mg/ounce
Mystery meat: Calories=200 Cal/ounce, Protien=0.2 gram/ounce, Vitamin C=0 mg/ounce,
Now,
Total calories = .
Thus,
The, total Protien = .
Thus,
also, total Vitamin C = .
Thus,
Therefore,
1, 2 and 3 are the mathematical models of the dietician's problem with a system of three linear equations.
(b) Now, we know three equations:
OR
From eqn 2,
From eqn 3.
OR
On solving the eqn 4, 5 and 6 for and
Multiplying eqn 5 by 100,
Now, subtract eqn 4 from eqn 7
Now, multiplying eqn 6 by 295. we have,
Now, subtract, eqn 8 from eqn 9, we get,
Now, substituting into eqn 6, we get
Now, substitute eqn 10 and 11 into eqn 4, we have