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
11111nata11111 [884]
2 years ago
5

You've poured some 8% (by mass) alcohol solution and some 12% alcohol solution into a large glass mixing container. Now you have

760
grams of 10% alcohol solution. How many grams of 8% solution and how many grams of 12% solution did you pour into the mixing container?
Mathematics
1 answer:
Dominik [7]2 years ago
4 0

Step-by-step explanation:

you mixed an 8% and a 12% solution together.

so, you get (8%×mass1 + 12%×mass2)/((mass1 + mass2)/2) as resulting % of the combined solution.

since the result is 10%, which is precisely the arithmetic middle

(8 + 12)/2

we see that mass1 = mass2.

in other words : the same quantity (mass) of the 8% solution and the 12% solution was mixed together.

so, 760g = 2×mass

=>

mass = 380g

380g of the 8% solution and 380g of the 12% solution were mixed together.

You might be interested in
Please help! Super easy just want to double check my answers! Thank you so much!
Alex777 [14]

Answer:

20

Step-by-step explanation:

i think, dont trust me tho

5 0
3 years ago
Read 2 more answers
Question in the image
Komok [63]

Answer:

0.4

Step-by-step explanation:

consider this like some lines overlapping each other.

one line (A) is 0.5 long, the other (B) 0.4 long.

together they are 0.8 long.

that means that they overlap at a length of 0.1 (they share a segment 0.1 long).

of the combined line of 0.8 that has 0.1 of a joined segment, the complimentary part of B is therefore 0.4 (0.8 minus the original length of B).

8 0
3 years ago
Geometry math question
kobusy [5.1K]

the answer that you are looking for is d

8 0
3 years ago
The perimeter of a square is 20 feet. How long is each side?
Firdavs [7]

Answer:

5ft

Step-by-step explanation:

all sides of a square are equal and there are 4 sides so divide 20 by 4 and you get 5 ft

5 0
3 years ago
Read 2 more answers
The essay lengths of 29 randomly sampled essays are used to estimate the mean of the population. What t-score should be used to
slavikrds [6]

Answer:

A t-score of 1.701 should be used to find the 95% confidence interval for the population mean

Step-by-step explanation:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 29 - 1 = 28

Now, we have to find a value of T, which is found looking at the t table, with 28 degrees of freedom(y-axis) and a confidence level of 0.95(t_{95}). So we have T = 1.701.

A t-score of 1.701 should be used to find the 95% confidence interval for the population mean

5 0
3 years ago
Other questions:
  • Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
    9·2 answers
  • A natural number _a rational number.
    10·1 answer
  • Distances in space are measured in light-years. The distance from Earth to a star is 4.1 × 1013 kilometers. What is the distance
    7·2 answers
  • Answer the questions to determine if events N and V independent. Round your answers to the nearest hundredth. P(N|V) = P(N) = Ar
    5·1 answer
  • The slope of the line is ___.
    12·1 answer
  • In the data set {16, 17, 18, 19, 20, 22, 24, 27, 29} how do you find<br> the 2nd quartile
    13·1 answer
  • Find the value of x.
    10·1 answer
  • The _______ is used to express absolute temperatures in the English system of measurement.
    12·1 answer
  • A football team needs new turf in order to host district tournaments and bring in revenue for the school next year. How much tot
    5·2 answers
  • Harper was out at a restaurant for dinner when the bill came. She wanted to leave a tip of 16%. What number should she multiply
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!