The amount of grams that she must use to make the solution she needs are: 12 grams and 8 grams.
<h3>Amount of grams</h3>
x grams of 20% and 20-x grams of 35%
Hence:
0.20x+0.35(20-x)=0.26×20
0.20x-0.35x+7=5.2
Collect like terms
-0.15x=-1.80
Divide both side by -0.15x
x=-1.80/-0.15
x=12 grams of 20% or 2.4 grams pure
20-x= (20-12) =8 grams of 35% or 2.8 grams pure
Therefore the amount of grams that she must use to make the solution she needs are: 12 grams and 8 grams.
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If x<0 and y>0, then the sign of the real number x-y/xy would be positive. <span>If x is negative and y is positive then x-y is negative and xy is negative. A negative number divided by another negative number would be positive. Hope this answers the question.</span>
Answer:
94 qt = 23 gal 2 qt
Step-by-step explanation:
1 gallon = 4 quarts
94 doesn’t divide evenly by 4, by 92 does.
92/4 = 23
There are 2 quarts left over
So, our answer is 23 gallons and 2 quarts
I hope I helped!
Let me know if you need anything else!
~ Zoe
1set =29.98
saved= 6.44
=> 1cd = 29.98+6.44 =36.42
3cd = 3(36.42) =109.26
* I'm not sure!