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iren [92.7K]
2 years ago
10

Help me plz!!!

Mathematics
1 answer:
Verdich [7]2 years ago
4 0
The first blank is 3
the second blank is 5
therefore the same things cannot add up to 2 and 8 at the same time
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Rajan needs 1 liter of 15% hydrochloric acid solution for an experiment. He checks his storage cabinet, but he only has a 5-lite
yarga [219]

Answer:

<em>Rajan must use </em><em>0.75</em><em> liters of 5% hydrochloric acid solution and </em><em>0.25</em><em> liters of 45% hydrochloric acid solution.</em>

Step-by-step explanation:

Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

x+y=1

i.e x=1-y --------------------1

As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

0.05x+0.45y=1\times 0.15

i.e 5x+45y=15 -------------2

Putting value of x from equation 1 in equation 2,

\Rightarrow 5(1-y)+45y=15

\Rightarrow 5-5y+45y=15

\Rightarrow 5+40y=15

\Rightarrow 40y=15-5=10

\Rightarrow y=0.25

Putting the value of y in equation 1,

x=1-0.25=0.75

Therefore, Rajan must use 0.75 liters of 5% hydrochloric acid solution and 0.25 liters of 45% hydrochloric acid solution.

5 0
3 years ago
Please help me! Thank you!
timurjin [86]

Answer:

<h3>I will chose the answer C </h3><h3 />

4 0
2 years ago
What is the slope of the the line shown below?​
ollegr [7]

Answer:

The answer is A. -2/7

Step-by-step explanation:

5 0
3 years ago
What is the equation of a line whose slope is 3/4 and y-intercept is 6
TEA [102]

Answer:

y=\frac{3}{4}x +6

Step-by-step explanation:

The equation of a line is represented by y=mx+b, where m is the slope and b is the y-intercept. Therefore, plug in the values you stated into the equation.

4 0
3 years ago
3 + x + 1 =2 what is x
ra1l [238]
Rearrange: 3 + x + 1 -(2) = 0 

Solve: x + 2= 0 

So the value of "x" is -2
8 0
3 years ago
Read 2 more answers
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