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
stich3 [128]
3 years ago
13

A scientist needs 120Ml of a 20% acid solution for an experiment. The lab has available a 10% solution and a 25% solution. How m

any millimeters of the 10% solution and how many millimeters of the 25% solution should the scientist mix to make the 20% solution?
Mathematics
1 answer:
Delvig [45]3 years ago
7 0

Answer:

40ml of 10% and 80ml of 25%

Step-by-step explanation:

10x+25(120-x)=2400

-15x+3000=2400

15x=600

x=40

You might be interested in
How is this solved? graph and explanation would be helpful
Nastasia [14]
As a rule, you plot the lines as though the equations had an equal sign. Because both are strict inequalities (no "or equal to"), the lines are dashed, indicating the (x, y) values on the line are NOT part of the solution.

The solution space will be above the first line (y > ...) and below the second line (y < ...). As a rule, you indicate the solution space by shading the portion of hte plane that satisfies the inequality.* The solution is the portion of the plane that is in both solution regions (that is, doubly-shaded).

_____
* Sometimes, it may actually work better to shade the portion of the plane that does NOT satisfy the inequality. That way, the remaining unshaded area is the solution space. If you do it that way, make sure the graph is clearly marked indicating that is the case. The usual expectation is that the shaded area is the solution, so you don't want to get your answer marked wrong or misinterpreted.

3 0
3 years ago
HELP!! EXTRA POINTS!!
Leto [7]

Answer:

option no. D is correct

(-3,1)

8 0
3 years ago
Han began with 5/6 pound of modeling clay and used1/5 of the clay to make decorative magnets. she divides the remaining clay int
tatiyna

Each portion will weigh 0.079lbs.


5/6-1/5=?

.833-.2=.633

.633÷8=.079lbs.

8 0
3 years ago
Tools
nexus9112 [7]

Answer: 104

Step-by-step explanation:

5 0
3 years ago
Ordena de mayor a menor en los Ejercicios 9 a 12.
Dominik [7]

Answer:

We are required to order the numbers from greatest to least.

So, according to the options:

1. 9.129, 9.37, 9.3, 9.219

Since, the number of digits after the decimal place are not same, so we make them equal by adding 0 at the end. SO, we have,

9.129, 9.370, 9.300, 9.219

As, the ones place in each of the number is same, we look at the digit after the decimal.

Now, 9.370 and 9.300 have the same number after the decimal, so we look at the next number i.e 7 and 0 respectively.

As 7 > 0, so we get 9.370 > 9.300.

Hence, the order becomes 9.370, 9.300, 9.219, 9.129.

2. 0.012, 0.100, 0.001, 0.101

Again, as the ones place in each of the number is same, we look at the digit after the decimal.

Now, 0.101 and 0.100 have the same number till two places after the decimal, so we look at the next number i.e. 1 and 0 respectively.

As 1 > 0, so we have 0.101 > 0.100

Hence, the order becomes 0.101, 0.100, 0.012, 0.001.

3. 5.132, 5.123, 5.312, 5.231

Again, as the ones place in each of the number is same, we look at the digit after the decimal.

Now, 5.132 and 5.123 have the same number after the decimal, so we look at the next number i.e. 3 and 2 respectively.

As 3 > 2, so we get 5.132 > 5.123.

Hence, the order is 5.312, 5.231, 5.132, 5.123.

4. 62.905, 62.833, 62.950, 62.383

As the ones place in each of the number is same, we look at the digit after the decimal.

Now, 62.905 and 62.950 have the same number after the decimal, so we look at the next number i.e. 0 and 5 respectively.

As 5 > 0, so we get 62.950 > 62.905.

Hence, the order becomes 62.950, 62.905, 62.833, 62.383.

3 0
4 years ago
Other questions:
  • What is the solution to the system of equations
    7·1 answer
  • I need to show the work. Please help
    9·1 answer
  • Need Help asap if you know the answer please explain so i know your not guessing! thank you
    5·1 answer
  • Can someone help me with this math problem?
    7·1 answer
  • Hey I’ll mark has brainliest and give u 15 pts if u can help me with this :)
    12·1 answer
  • Since it is given that AB ≅ AC, it must also be true that AB = AC. Assume ∠B and ∠C are not congruent. Then the measure of one a
    13·2 answers
  • Can you guys help me match the transformations with there deception.
    15·1 answer
  • A liquid changing to a gas Is an example of​
    12·2 answers
  • Find the value of k, if (x - 2) is a factor of the polynomial p(x) = 2x2 + 3x - k​
    14·1 answer
  • Simplify the expression: 6x + 6 - 10x
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!