4 years ago

Pure acid is to be added to a 10% acid solution to obtain 21 L of a 40% acid solution.

1 answer:

3 0

7 gallons of pure acid and 14 gallons of 10% acid

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lbvjy [14]

Answer:

Step-by-step explanatiWe know x is between 1 and 3 so the best estimate is 2 even though the answer could also be 3 but that will be skewed.

4 0

3 years ago

Vinil7 [7]

Is this multiple choice

5 0

3 years ago

Alinara [238K]

Answer:

x = 26, y = 19

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

$\frac{ST}{NP}$ = $\frac{RS}{MN}$ , substitute values

$\frac{x}{13}$ = $\frac{32}{16}$ = 2 ( multiply both sides by 13 )

x = 26

and

$\frac{MP}{RT}$ = $\frac{MN}{RS}$ , substitute values

$\frac{y}{38}$ = $\frac{16}{32}$ = $\frac{1}{2}$ ( cross- multiply )

2y = 38 ( divide both sides by 2 )

y = 19

5 0

3 years ago

ira [324]

I think is 3*3*pi=28.29
28.29*1=28.29

5 0

3 years ago

ryzh [129]

Time it by the number before hand and you get 8 then 16 then 32 . Think about it it works and it’s a consistent continental

3 0

3 years ago

Pure acid is to be added to a 10​% acid solution to obtain 21 L of a 40​% acid solution.