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
Ray Of Light [21]
3 years ago
15

Can someone plz help me solved this problem I need help plz help me! Will mark you as brainiest!

Mathematics
1 answer:
I am Lyosha [343]3 years ago
6 0

Answer:

13 l of 15%, 13 l of 25%, 26 l of 70%

Step-by-step explanation:

solutions:

  • 15%, 25% and 70%

final solution:

  • 52 l of 45%

This includes 0.45*52l= 23.4 l acid

Let's assume:

  • amount of 15% solution= x
  • amount of 25% solution= y
  • amount of 70% solution= z
  • and we have z=2y

so there are 2 equation:

  • x+y+z=52
  • 0.15x+0.25y+0.7z=23.4

or

  • x+y+2y= 52 ⇒ x+3y= 52 ⇒ x= 52- 3y
  • 0.15x+0.25y+1.4y=23.4
  • 0.15x+1.65y=23.4
  • 0.15*(52-3y)+1.65y=23.4
  • 7.8-0.45y+1.65y=23.4
  • 1.2y=23.4-7.8
  • 1.2y= 15.6
  • y=15.6/1.2
  • y= 13 l

--------

  • x= 52- 3*13= 13 l
  • z= 2y= 2*13= 26 l
You might be interested in
Question 3 (5 points)
Vedmedyk [2.9K]

A quadrilateral that has all congruent sides and all right angles is known as a square.

Given is a quadrilateral with all right angles and congruent sides.

<h3>What is a Quadrilateral?</h3>

A four-sided polygon having four sides and four corners is referred to as a quadrilateral in geometry .

<h3>What are Congruent sides?</h3>

Congruent sides refers to a figure's sides being equal to one another.

We know that,

A square is a quadrilateral with angles that are each 90 degrees.

Additionally, a square has four equal sides, making it a quadrilateral having all  sides congruent.

As a result, a square is a quadrilateral with congruent sides and all right angles.

Learn more about quadrilateral here:

brainly.com/question/16691874

#SPJ9

4 0
1 year ago
HELP PLEASE (will give brainliest and thanks)
denpristay [2]
Pythagorean Theorem is a^2 + b^2 = c^2
Use it to find the hypotenuse of a right triangle
Formula for:
Volume of cones- 1/3 * 3.14 * r^2 * h
Volume of cylinders- 3.14 * r^2 * h
Volume of Spheres - 4/3 * 3.14 * r^3 
5 0
3 years ago
I'm so bad at math please anyone help :(
kondaur [170]
It should be d. , Because if you take the equation 3x+y=9, and make it slope intercept form, it would be y= -3x+9. -3 is the slope, and 9 is the y intercept. D is the answer.
6 0
3 years ago
Which one is greater 3/10 or 2/5
Andreyy89

Answer:

2/5

Step-by-step explanation:

2/5=4/10

4 0
2 years ago
Read 2 more answers
The manager of a health food store sells peanuts for $8 a pound and premium cashews for $13 a pound. If he wishes to make a 400
STALIN [3.7K]

8*12+3*8=6*20

96+24=120

120=120

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP ASAP!! There is a two-digit number whose units digit is six less than the tens digit. Four times the tens digit plus
    5·2 answers
  • The cost of a repair, which depends on the hours it takes to make the repair, is $200. Which of the following best shows this in
    6·1 answer
  • The windows on a building are proportional to the size of the building. The height of each window is 18in., and the width is 11i
    11·2 answers
  • Select each type of line of symmetry that the following figure has, if any.
    10·2 answers
  • Write equations as sentence 9+x=10​
    12·2 answers
  • There are 70,000 bacteria present in a culture. An antibiotic is introduced to the culture and the number of bacteria is reduced
    8·1 answer
  • I WILL GIVE BRAINLEST
    12·1 answer
  • Please Help! What decimal is less than 0.4?
    14·1 answer
  • Write the equation in y=(your answer) y is the y axis in coordinate plane.
    9·1 answer
  • HELP PLEASE WILL GIVE BRAINLISET
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!