We begin with 100 mL of the 2% saline solution, and will add x mL of the 0.5% saline solution. The total volume of the mixture will be (100 + x) mL. The total mass of salt will be:
(100)(2%) + (x)(0.5%) = 2 + 0.005x
This would have to be 0.79% of the total volume:
(100+x)(0.79%) = 0.79 + 0.0079x
Equating:
x = 417.24 mL
A polynomial can only have one constant, since the constant is the one number being added or subtracted from the rest of the polynomial, and it is the only number that is not being multiplied by an x value.
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Answer:
126 cm^3
Step-by-step explanation:
Use volume formula (Bh=V): 21×6=126
