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Nikolay [14]
3 years ago
15

A chemist mixes a 10% hydrogen peroxide solution with a 25% hydrogen peroxide solution to create 30 liters of a 15% hydrogen per

oxide solution. How many liters of the 10% solution did the chemist use to make the 15% solution?
Mathematics
2 answers:
kupik [55]3 years ago
6 0
The answer is 20 liters.
Alenkasestr [34]3 years ago
5 0

Answer:

the answer is 20 liters

Step-by-step explanation:

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What is 3 divided 76
shtirl [24]
0.0394736842 is the answer

Write   76 <span>)¯3¯¯ 
</span>
 add a 0 next to the 3 ( you will have 30) then on top of the divison bar put a "." one space over the 3 so like  
       0.
76<span>)¯30¯¯    (lol)

since 76 still cant go into the 3 add another 0 to the 30 ( so you should now have 300) and a 0 next to the "." so you have 0.0 on top.

76 goes into 300 3 times wich is with a reminder of 72. (76x 300 is 228)

write a 3 next to the 0.0 so you have 0.03

write 228 under the 300

subtract. you get 72

write the 72

since 76 cant go into 72 add a 0 to the 300. Drop the 0 to the 72 so you have 720.

I think you can figure out the rest. If not tellme and I will do the next step and you can take it from there
</span>



6 0
3 years ago
Read 2 more answers
2x-1/3x+1=6x-1/9x-3​
shtirl [24]
The answer is x=3

So c is 3
6 0
3 years ago
C.is decrease by 1 foot every 500 miles D. Is decrease by 1 foot every 1000 miles
Tasya [4]

Answer:

Option A

Step-by-step explanation:

Slope of a line passing through two points (x_1,y_1) and (x_2,y_2) is given by,

Slope = \frac{y_2-y_1}{x_2-x_1}

Line shown in the graph is passing through two points (2, 8000) and (4, 7000).

Therefore, slope of the given line = \frac{8000-7000}{2-4}

                                                        = -500 feet per mile

Which means, altitude decreases by 500 ft every mile.

(Negative sign represents the decrease)

Option A is the correct option.

4 0
2 years ago
Dhaulagiri is the 7th highest mountain in the world. Ms. Fink is walking through
11111nata11111 [884]

Answer:

4833 m

Step-by-step explanation:

Given that her angle of elevation at the first recording is 47.3 at an altitude of 4900 m

We use Pythagoras Theorem to get this done

We can say that the opposite of the angle is the altitude, while the hypotenuse of the triangle, is the distance between herself and the top

Using the sine angle rule, we have

Sine 47.3 = 4900 / h

h = 4900 / sin 47.3

h = 4900 / 0.7349

h = 6668 m

This means that she was 6668 m away from the top of the mountain

She then moves 1000 m closer to the mountain top, this means that our h = 6668 - 1000

Using the same sine angle rule, we have

Sine 58.5 = o / 5668

o = 5668 * sine 58.5

o = 5668 * 0.8526

o = 4833 m

She is 4833 m above the sea level

5 0
3 years ago
Plz help brainiest to whoever right
iren [92.7K]

Answer:

I’m sorry I can’t really see it but I think it’s 7 20

Step-by-step explanation:

4 0
2 years ago
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