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
Snowcat [4.5K]
3 years ago
9

Solve mixture problems. George wishes to increase the percent of acid in 50m / of a 15% acid solution in water to 25% acid, how

much pure acid must you add?
Mathematics
1 answer:
fenix001 [56]3 years ago
7 0

Answer:

x = amount of pure acid to be added = 6.67ml

Step-by-step explanation:

George wishes to increase the percent of acid in 50ml of a 15% acid solution in water to 25% acid, how much pure acid must you add?

let

x = amount of pure acid to be added

15% of 50 + x = 25% of 50 + x

(0.15 * 50) + x = 0.25(50 + x)

7.5 + x = 12.5 + 0.25x

Collect like terms

x - 0.25x = 12.5 - 7.5

0.75x = 5

x = 5/0.75

x = 6.6666666666666

Approximately,

x = 6.67

x = amount of pure acid to be added = 6.67ml

You might be interested in
Tickets to a concert cost $70, or $20 with a student discount. Ticket sales must exceed $500,000 for the group to perform. If 20
Angelina_Jolie [31]

Solution:

Let x = the number of $70 seats sold

Let y = the number of $20 seats sold

x+y ≤ 20,000

70x+20y > 500,000

4 0
3 years ago
Read 2 more answers
The domain of f(x) is the set of all real values except 7 , and the domain of g(x) is the set of all real values except -3. Witc
Anna007 [38]
Answer: <span><span>the domain of g [f(x) ] is the set of all real values except 7 and the x for which f(x) = - 3.</span>

Explanation:

Taking (g•f)(x) as (g o f) (x), this is g (x) composed with f(x) you have this analysis.

(g o f) (x) is g [ f(x) ], which means that you first apply the function f and then apply the function g to the output of f(x).

The domain of g [ f(x) ] has to exclude 7, because it is not included in the domain of f(x).

Also the domain thas to exclude those values of x for which f(x) is - 3, because the domain of g(x) is the set of all real values except - 3.

So, the domain of g [f(x) ] is the set of all real values except 7 and the x for which f(x) = - 3.


</span>
6 0
3 years ago
Read 2 more answers
Devon needs 8 yards of fabric to make a blanket. He has a total of 332 yards of fabric. How many blankets can Devon make? A 4040
eimsori [14]
332/8= 41.5 but you cant make half of a blanket so itll be 41!
6 0
3 years ago
Which is the best approximate solution of the system of linear equations y = 1.5x – 1 and y = 1?
pychu [463]
1.33.1 that the answer you have to mutiply
4 0
3 years ago
Read 2 more answers
2x-4y=20 what is the value of y
ra1l [238]

Answer: 20-2x/-4

Step-by-step explanation:

To actually solve for y as a number, you need two equations.

For this case move the 2x to the other side, making the equation -4y=20-2x.

Then divide by -4 on each side making the equation y=20-2x/-4.

6 0
4 years ago
Read 2 more answers
Other questions:
  • 3(x+y)=y, if (x,y) is a solution to the equation above and y cannot equal to zero what is the ratio x/y
    15·1 answer
  • Answer with Equation. Lisa has a certain amount of money. She spent $90 and has 3/4 left. what was her original price?
    5·1 answer
  • In what ways were the new artistic style of the 1800s a reaction to change in society
    11·1 answer
  • Simplify. (3x^2 + 3) - (6x + 4) + (3x^2 - 5x)
    6·1 answer
  • Ellie’s bird feeder is shaped like a cone with a height of 24 in. and a radius of 3 in. Packages of bird seed are cylindrical an
    13·1 answer
  • Can you help with this is it right or wrong
    11·1 answer
  • ON TIMER!!!
    7·1 answer
  • At a gas station, it takes 14 seconds to pump 2 gallons of gas. if the amount of gasoline pumped varies directly with time, how
    9·2 answers
  • I need help on this question plz and thank you <br> (Question 5 and if you can number 3 as well)
    6·1 answer
  • Find the length of each arc. Round your answers to the nearest tenth. NO LINKS!! Part 1​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!