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
KatRina [158]
2 years ago
15

A chemist mixes a 25 % acid solution with a 45% acid solution to make 600 ml of a 30% acid solution. How much of each type of so

lution does she use? Please help asap, I'm confused.
Mathematics
1 answer:
PilotLPTM [1.2K]2 years ago
6 0

Answer:

25 % acid solution = 450ml

45% acid solution = 150ml

Step-by-step explanation:

Let

x = 25 % acid solution

y = 45% acid solution

x + y = 600

.25x + .45y = .30(600)

x + y = 600 (1)

.25x + .45y = 180 (2)

From (1)

x = 600 - y

Substitute x = 600 - y into (2)

.25x + .45y = 180

.25(600 - y) + .45y = 180

150 - .25y + .45y = 180

150 + .20y = 180

.20y = 180 - 150

.20y = 30

Divide both sides by .20

y = 30/0.20

= 150

y = 150ml

Substitute y = 150 into

x + y = 600

x + 150 = 600

x = 600 - 150

= 450

x = 450ml

25 % acid solution = 450ml

45% acid solution = 150ml

You might be interested in
Use the Pythagorean theorem to find the unknown side of the right<br>triangle​
kramer

Answer:

26

Step-by-step explanation:

→ Utilise Pythagoras theorem

a² + b² = c²

→ Substitute in the values

10² + 24² = c²

→ Simplify

100 + 576 = c²

→ Simplify further

676 = c²

→ Square root both sides to isolate c

26 = c

7 0
3 years ago
The value of U.S exports to China increased from $1480 million in 2011 to $2768 million
aliya0001 [1]

The percentage of increase was 87.027... %

<em><u>Explanation</u></em>

The value of U.S exports to China increased from $1480 million to $2768 million.

Suppose, the percentage of increase is  x\%

So, <u>the amount of increase</u> = x\% of 1480 =1480*\frac{x}{100}=14.8x

Thus, the equation will be......

14.8x= 2768-1480\\ \\ 14.8x=1288\\ \\ x= \frac{1288}{14.8}=87.027....

So, the percentage of increase was 87.027... %

7 0
3 years ago
Out of 230 students, 11% chose gymnastics as their favorite sport. How many students does 11% represent? *
joja [24]

Answer:

25

Step-by-step explanation:

11\% \: of \: 230 \\  \\  =  \frac{11}{100}  \times 230 \\  \\  = 0.11 \times 230 \\  \\  = 25.3 \\   = 25

Hence 11% represents 25 students.

5 0
3 years ago
if a tv has a diagonal measurement of 55 and a height of 30, what is the tvs width? round to the nearest whole number
Sati [7]

Answer:

  46

Step-by-step explanation:

The geometry can be modeled by a right triangle. The diagonal measure is the hypotenuse, and the height is one leg. The width is the other leg, and can be found using the Pythagorean theorem.

__

<h3>Pythagorean theorem</h3>

The relation between the leg lengths (a, b) and the hypotenuse (c) is ...

  c² = a² +b²

Solving for b gives ...

  b = √(c² -a²)

<h3>application</h3>

In this problem, we have c=55 and a=30. Then the width of the TV is ...

  b = √(55² -30²) = √(3025 -900) = √2125

  b ≈ 46.098

The width of the TV is about 46.

7 0
2 years ago
Bill has enough money to buy no more than 1/2 pound of cheese. How much cheese could he buy?
Zepler [3.9K]
1/2 I guess I don't  think you typed in the question correctly. Not trying to be mean.
3 0
3 years ago
Other questions:
  • Can i get some help on this please ​
    8·1 answer
  • PLEASE HELP ME WITH THIS MATH QUESTION ASAP!!
    7·1 answer
  • Question : <br> 3x-9y+12=?
    11·1 answer
  • 30 POINTS AND BRAINLIST FOR RIGHT ANSWER
    7·1 answer
  • B/16 = B-6/4<br><br> Find B:<br><br> Linear Equalities
    8·1 answer
  • yesterday Ron's donut shop sold one half as many chocolate donuts as cinnamon donuts if they sold 7/8 of a tray of cinnamon donu
    13·1 answer
  • Solve for x. Round to the nearest tenth, if necessary. 5.5 D 61° х F<br><br>Please help​
    8·1 answer
  • URGENT PLS HELP&lt;3 Each person needs to rent a helmet for $5. Write the expression for the total cost for the helmets.
    11·2 answers
  • What is the number of solutions to this system?
    8·1 answer
  • If g(x) is x-3 then what is g(3x)
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!