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
Archy [21]
4 years ago
12

Anna-Maria has added 4 quarts of an alcohol in water solution to 1 quart of water and her ending product is a 36% alcohol in wat

er solution. What was the concentration of the 4 quarts of alcohol solution that was added?
Mathematics
1 answer:
fomenos4 years ago
5 0
The concentration of solution would be the amount of the molecule divided by the volume. In this case, the solution concentration is 36% and the volume is 4 quarts + 1 quarts= 5 quarts. You are asked the concentration before 1 quarts added. The alcohol content should be same for both solutions. The answer should be:

concentration = alcohol content/ volume
alcohol content =concentration * volume
alcohol content1 =alcohol content2
36% * 5 quarts = concentration2 * 4quarts
concentration2= 36% * 5 quarts / 4 quarts= 45%
You might be interested in
*angel pair relation ships* SOMEONE PLS HELP I DO NOT GET THIS I AM TIMED!!
inessss [21]

i dont know if im right......

2. x = 9

3. x = -7

4. x = 3.42 or 3.41

8 0
3 years ago
Read 2 more answers
If t a n squared θ = 3 /8 , what is the value of  s e c θ
TEA [102]

We can use 3 facts:

\tan{\theta}=\frac{y}{x}

\sec{\theta}=\frac{r}{x}

x^2+y^2=r^2

So, to find our x and our y we can do:

\tan^2{\theta}=\frac{3}{8} \implies \\ \tan{\theta}=\pm{\sqrt{\frac{3}{8}}=\pm\frac{\sqrt{3}}{\sqrt{8}}So, now that we know our x and our y we can find our r.

(\sqrt{3})^2+(\sqrt{8})^2=11 \implies r=\sqrt{11}

You'll notice, though, that there were two solutions for \tan{\theta}, which means we have a positive and a negative for our x. So:

\sec{\theta}=\frac{\sqrt{11}}{\sqrt{8}} \\ \sec{\theta}=-\frac{\sqrt{11}}{\sqrt{8}}}\\ \text{Rationalizing both of them:}\\ \sec{\theta}=\frac{\sqrt{88}}{8} \\ \sec{\theta}=-\frac{\sqrt{88}}{8}

7 0
3 years ago
Read 2 more answers
the cost of diesel fuel varies directly with the number of gallons purchased. if 21 gallons of diesel fuel costs $73.50, how man
atroni [7]
73.50÷21=3.5 per gallon

98÷3.5=28 gallons ...answer
8 0
4 years ago
Read 2 more answers
Help please, i don’t understand
amid [387]
<h3><em><u>Going</u></em><em><u> </u></em><em><u>sideways</u></em><em><u>:</u></em><em><u>-</u></em></h3>
  • x = 50°
  • x = 112°
  • x = 119°
  • x = 106°
  • x = 46°
  • x = 118°

4 0
3 years ago
There are 58 students in an art class. The day before class begins, 10.3 percent of the students cancel
jenyasd209 [6]

Answer:10.3% is the percentage of students who cancelled, but the question is asking for the students who are attending, so let's use 89.7% to make it easier. The proportion would be x over 58 is equal to 89.7% over 100%. ... 52 students actually attend the art class, making this your final answer.

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • What does 3.33333333333 mean in fractions?
    13·1 answer
  • What is -3(4r - 8) = -36
    13·2 answers
  • What is the value of the discriminant in the equation shown below? x^2-4x+10=0?
    14·1 answer
  • Add the polynomials 6a-4b+c and 4a+c
    6·2 answers
  • Dylan deposited 15,000 in an account that pays 7.50% simple interest for 3.5 years. What is the ending balance in the account
    6·1 answer
  • A rectangle has a length of 10 inches and a width of 5 inches. If the length is increased by x inches and the width decreased by
    11·1 answer
  • Sarah and Eva took a road trip. Sarah drove two-fifths of the miles. If she drove 128 miles, how many total miles did they drive
    8·1 answer
  • Can you guys help me? The question is in the image
    9·2 answers
  • Choose
    6·1 answer
  • How many terms are in this expression 4u + 6t
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!