1 is x=−3y+2z2 is x=2−2<span>z
3 is </span>x=1−3y over 2
Answer:
- 750 mL of 0.23% solution
- 250 mL of 0.03% solution
Step-by-step explanation:
Let x represent the quantity (in liters) of the higher percentage solution, the 0.23% solution. Then 1-x will be the quantity of 0.03% solution. The amount of salt in the mix is ...
0.23%·x +0.03%·(1 -x) = 0.18%·1
Multiply by 100% and subtract 3:
20x = 15
x = 15/20 = 0.75 . . . . liters of 0.23% solution
1-x = 1-0.75 = 0.25 . . liters of 0.03% solution
The lab tech needs 750 mL of 0.23% solution and 250 mL of 0.03% solution.
The value of x is 1 .(C)
Step-by-step explanation:
Three or more points lying on a straight line are said to be collinear
In this question, B is the point between A and C. This means;
AB+BC=AC where;
AB=10x+1
BC=5x+1
AC=17
10x+1 + 5x+1 =17
15x+2=17
15x=17-2
15x=15
x=15/15 =1
Learn More
Collinear points : brainly.com/question/1593959
Keywords: collinear, points
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I believe the answer is -5
Answer:
Step-by-step explanation:
