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
irinina [24]
3 years ago
7

A chemistry teacher needs to mix a 30% salt solution with a 70% salt solution to make 20 qt of a 40% salt solution. How many qua

rts of each solution should the teacher mix to get the desired result?
Mathematics
1 answer:
fiasKO [112]3 years ago
7 0
The formula should be 0.3x + 0.7(20-x) = 0.4(20)
Simplifying it would get 3x + 7(20-x) = 4(20)
and: 3x + 140 - 7x = 80
then: 4x = 60
x = 15
So then for the 30% solution: 15 quarts
And for the 40%: 5 quarts
You might be interested in
Please help, it's due VERY SOON.
AleksAgata [21]

Answer:

16.8 ÷ 8 = 2.1

( For the other ones with the " tenths " confuses because I dont know where its going gl l though )

8 0
2 years ago
Read 2 more answers
Identify an angle adjacent to the given angle.
Step2247 [10]
C.....hlj so yeah because it shows it on the diagram
7 0
3 years ago
Which list shows the numbers in order from least to greatest?
dem82 [27]

Answer:

7.41, 7.6, 745

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
Please help me if you love your mom
kari74 [83]

Answer:

10.2 cm²

Step-by-step explanation:

regular hexagon made up of six equilateral triangles

A = (2 × 1.7) /2 × 6 = 10.2

or by the side length

A = 3√3/2 * 2² = 10.3

8 0
3 years ago
What is the value of x?
skelet666 [1.2K]

Answer:

x = 20

Step-by-step explanation:

Since ΔACB ≅ ΔDCE then ∠A ≅ ∠D, that is

3x - 10 = 2x + 10 ( subtract 2x from both sides )

x - 10 = 10 ( add 10 to both sides )

x = 20

8 0
2 years ago
Other questions:
  • Please help! I will mark you as brainliest!
    13·1 answer
  • Length = 8.5 meters
    13·1 answer
  • 55c+13≤75c+39 answer please
    13·1 answer
  • Write a. equation in point slope form of the line that passes through the given point and has the given slope
    5·2 answers
  • Hey guys did you know Brainly has a very nice app with some cool camera features?
    6·1 answer
  • The slope of a line is -4 and Y negative intercept is -3 what is the equation of the line written in slope intercept form
    5·1 answer
  • A triangle has no congruent sides and one angle measuring 108°.
    14·1 answer
  • X - 9<br> - -2<br> —<br> x - 2<br><br> Solve for all values of x.
    15·1 answer
  • Please help me please i really need help please
    8·1 answer
  • A community swimming pool is a rectangular prism that is 30 feet long, 12 feet wide, and 5 feet deep. The wading pool is half as
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!