1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lapo4ka [179]
2 years ago
8

A chemist is mixing solutions. Solution A is 15% acid, and solution B is 30% acid. She mixes the two solutions to make 12 liters

of a new solution that is 25% acid. How many liters of each type of solution did the chemist use to make the new solution?

Mathematics
1 answer:
RoseWind [281]2 years ago
7 0

Answer:

The addition of 4 liters of 25% solution to 6 liters of 50% solution produces 10 liters of 40% solution.

Step-by-step explanation:

Hope this helps.

Super sorry if it doesn't.

You might be interested in
4y-x=6 solve the equation for x
Gwar [14]

Answer:

x=6

Step-by-step explanation:

you have to find the y value which should be 3 then subtract the x value. Which should be 6

5 0
3 years ago
There is a mountain with 45 bat caves in a row. Every cave has at least 2 bats and there are 490 bats in all. Any 7 caves in a r
zhannawk [14.2K]

Answer:

12

Step-by-step explanation:

The first cave has 7 times more bats than the last cave.  So if the 45th cave has b bats, then the first cave has 7b bats.

There are 77 bats in every row of 7 caves.  So if there are 7b bats in the first cave, then there are 77−7b bats in caves 2 through 7.

Since there are also 77 bats in caves 2 through 8, that means cave #8 must have 7b bats.  Repeating this logic:

#1 = 7b

#2-#7 = 77−7b

#8 = 7b

#9-#14 = 77−7b

#15 = 7b

#16-21 = 77−7b

#22 = 7b

#23-28 = 77−7b

#29 = 7b

So the first 29 caves have 5(7b) + 4(77−7b) = 308 + 7b bats.

Now we do the same thing from the other end.  If cave #45 has b bats, then caves #39-#44 have 77−b bats.  And since caves #38-44 have 77 bats, then cave #38 has b bats.  Therefore:

#45 = b

#39-44 = 77−b

#38 = b

#32-37 = 77−b

#31 = b

So caves 31 through 45 have 3b + 2(77−b) = 154 + b bats.

Adding that to the first 29 caves, plus x number of bats in cave #30:

308 + 7b + x + 154 + b = 462 + 8b + x

We know this equals 490.

490 = 462 + 8b + x

28 = 8b + x

x is a maximum when b is a minimum, which is b = 2.

28 = 8(2) + x

x = 12

There are at most 12 bats in the 30th cave.

8 0
3 years ago
What is the smallest number that rounds to 45 000 when round off to the nearest thousand​
suter [353]

The least number which can be rounded off to 45,000 is 44,500. While the largest is 45,499.

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

5 0
3 years ago
Read 2 more answers
many school districts have a summer-vacation that is 72 days long .what is the percent of the entire year is summer vacation?
vichka [17]
19.73% is 72 days of the year
7 0
2 years ago
Which number produces an irrational number when added to 3/4?
S_A_V [24]
Any irrational number produces an irrational number when added to 3/4.

This is because 3/4 is rational (it can be represented as a ratio of two integers). You can get an irrational number only when you add rational to irrational (because rational to rational produces a rational sum).
6 0
3 years ago
Other questions:
  • Find the solutions to the equation below.<br> 2x2 + 7x + 3 = 0
    11·2 answers
  • What is 8m is less than or equal to 56​
    10·1 answer
  • Choose the product as a base with an exponent
    13·1 answer
  • WHAT IS THE SOLUTION TO -3X+10=3X-8
    13·1 answer
  • I NEED THIS LIKE, RIGHT NOW. THIS IS DUE AT 3:00
    13·2 answers
  • Can anyone help me with this please
    11·1 answer
  • What is the missing number in the table?
    5·1 answer
  • Anyone want 30 POINTS AND BRAINLIEST.. go to my questions it will be the one under this one
    15·2 answers
  • Helpppppp!!!!!!!!!! Plsss
    9·1 answer
  • Work out the angle x<br> 2x<br> 3.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!