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
marta [7]
3 years ago
11

How much of 30% HCI and 45% HCI would be needed to mix and produce 50 liters of 35% HCI

Mathematics
1 answer:
VladimirAG [237]3 years ago
5 0

Answer:

  • 33 1/3 liters of 30%
  • 16 2/3 liters of 45%

Step-by-step explanation:

Let x represent the liters of 45% solution needed. Then the amount of HCl in the mix is ...

  0.45x +0.30(50 -x) = 0.35(50)

  0.15x = 0.05(50) . . . . . simplify, subtract 0.30(50)

  x = (0.05/0.15)(50) = 50/3 = 16 2/3 . . . liters of 45% HCl

33  1/3 liters of 30% and 16 2/3 liters of 45% HCl are needed.

_____

<em>Comment on the solution</em>

You may notice that the general solution to a mixture problem of this sort is that the fraction of the mix that is the highest contributor is ...

  (mix % - low %) / (high % - low %) = (.35 -.30) / (.45 -.30) = .05/.15 = 1/3

You might be interested in
A decorative floor pattern has 1 red square tile surrounded by 12 blue tiles. Write an expression to show how many total red and
Nonamiya [84]

The general equation is that for every red tile, there must be 12 blue ones.

Algebraically this is expressed as b = 12r where r is red and b is blue. Your teacher might like you to express it as y = 12x where y is blue and x is red. The meaning is the same.

For beginners it might be easier to say b = 12r. So if you have 15 reds then r = 15

b = 12 * r

b = 12 * 15

b = 180 blue tiles.

8 0
3 years ago
Read 2 more answers
Write the ordered pair for the point S.
beks73 [17]

Given:

The location of point S on a coordinate plane.

To find:

The ordered pair for the point S.

Solution:

A point is defined as (x,y), where, |x| is the distance between the point and y-axis, and |y| be the distance between the point and x-axis. Signs of coordinates depend on the quadrant.

From the given graph it is clear that,

Distance between S and y-axis = 3.5

Distance between S and x-axis = 5.5

Point S lies in 3rd quadrant, it means x- and y-coordinates are negative.

Therefore, the ordered pair of point S is (-3.5,-5.5).

8 0
3 years ago
Need help with this ASAP: methods for solving right triangles.
sashaice [31]

Explanation:

1) sin(37º)=x/10.3————>trigonometric ratio (sine)

2)7²+10²=c²—————-> pythagorean theorem

3) using sine—————> sin(51º)=9/x

using tangent —————> tan(51º)=9/x and x = 7.3 (rounded)

4)using pythagorean theorem————> 6²+7²=c²

angle b is tanx=6/7 where x = 40.6 degrees, angle a is tanx=7/6 where x = 49.4

Answers:

1)x= 6.2

2)x= 12.2

3)x= 11.6 (rounded)

4)x= 9.2

credit to <u>genan</u> for question 3 and 4

ur welcome :)

correct me if im wrong

brainliest please?

4 0
2 years ago
A computer costs $725.85 and a printer costs $87.55. The state sales tax is 6%. What would be the total cost of
katen-ka-za [31]

Answer: It would be $862.20

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A quarter is worth of a dollar. Haley needs to exchange dollar bills to get quarters to do her laundry in coin washers and dryer
Ira Lisetskai [31]

Answer:

52 quarters

Step-by-step explanation:

-We know that a quarter dollar is equivalent to $0.25

\$1=4 \ Quarters

-Given that Haley has $13, we multiply this amount by 4 since $1 has 4 quarters to obtain the number of quarters:

Q=13\times 4\\\\=52

Hence, Hayley will get 52 quarters.

8 0
3 years ago
Other questions:
  • Cody was going to sell all of his stamp collection to buy a video game. after selling half of them he changed his mind. he then
    15·1 answer
  • On a large map, the distance from Austin, Texas, to Milwaukee, Wisconsin, is 13.7 inches. The actual distance is about 1,000 mil
    8·2 answers
  • Determine algebraically whether the function is even, odd, or neither even nor odd.<br> f(x)=2/x^2
    14·1 answer
  • What does x equal in 4/5x = 7/5?
    15·2 answers
  • What are the coefficients of 12-8x+14y
    13·1 answer
  • A combination lock has 3 dials. The first 2 dials have a setting for digits 0 through 9, and the third has settings for all 26 l
    10·1 answer
  • Find original price.<br> Swimsuit discounted 65% on sale for $20.30
    6·1 answer
  • How is the area of a parallelogram affected if the base is multiplied by 3/4
    15·1 answer
  • Can y'all help this math question ​
    7·1 answer
  • Which relation is a function?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!