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Luden [163]
3 years ago
13

HELPP ME PLZ WILLING TO SEND MONEY! It’s urgent

Mathematics
2 answers:
BaLLatris [955]3 years ago
8 0

Answer:

Devon needs to add 60 mL of 5% acid solution and 30 mL of 20% acid solution

Step-by-step explanation:

It knows acid and water concentration for every solution. 2 equations are proposed because there are two unknowns. V1= volume 5%acid and V2 =volume 20% acid

Acid V1(0.05)+V2(0.2)=90mL(0.1)

Water V1(0.95)+V2(0.8)=90mL(0.9)

Clearing V1 from acid equation having to: V1=180-4V2

Replacing V1 in the water equation having to: (180-4V2)(095)+V2(0.8)=81

Clearing V2 = 30mL

Replacing in water equation V1(0.05)+30(0.2)=9 So, V1=60mL

ExtremeBDS [4]3 years ago
7 0

Answer:

I think it would be 5 and 5 of each solution

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Alexxandr [17]

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3 years ago
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shutvik [7]

Answer:

y = -1/2x -3

Step-by-step explanation:

The steps to solve this include finding the slope of the line and finding the point where the line crosses the y axis.

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4 0
3 years ago
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Firdavs [7]
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3 0
4 years ago
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snow_tiger [21]

Answer:

Step-by-step explanation:

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A=$212

5 0
3 years ago
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