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
Dmitry_Shevchenko [17]
3 years ago
7

Brine is a solution of salt and water. If a tub contains 50 gallons of a 5% solution of brine, how much water must evaporate to

change it to an 8% solution?
Mathematics
1 answer:
S_A_V [24]3 years ago
5 0
<span><span>Let x = amt of water evaporated

.05(50) = .08(50-x)
2.5 = 4 - .08x
.08x = 4 - 2.5
.08x = 1.5
x = 
x = 18.75 lb of water evaporated

Check; amt of salt remains the same, only the percentage is different, right?
.05(50) = .08(50-18.75)
.05(50) = .08(31.25)
2.5 = 2.5</span><span>
</span></span>
You might be interested in
Vector u has initial point at (3, 9) and terminal point at (–7, 5). Vector v has initial point at (1, –4) and terminal point at
spin [16.1K]

Answer:

⟨-5, -1⟩

Step-by-step explanation:

Vector:

A vector is given by its endpoint subtracted by its initial point.

Vector u has initial point at (3, 9) and terminal point at (–7, 5)

Then

u = (-7, 5) - (3,9) = (-7 - 3, 5 - 9) = (-10,-4)

Vector v has initial point at (1, –4) and terminal point at (6, –1).

Then

v = (6,-1) - (1,-4) = (6-1,-1-(-4)) = (5,3)

What is u + v in component form?

u + v = (-10,-4) + (5,3) = (-10+5,-4+3) = (-5,-1)

⟨-5, -1⟩ is the answer.

3 0
3 years ago
Julia is going for a walk through the neighborhood. What unit of measure is most appropriate to describe the distance she walks?
Kryger [21]

Answer:

Possibly meters or feet/yards.

A walk through a neighborhood would be less than a mile/kilometer but much further than an inch/centimeter.


8 0
3 years ago
Read 2 more answers
You deposit $2000 in a savings account earning 5% simple interest. How long will it take for the balance of the account to be $3
Elden [556K]
A year and a half or 18 months
4 0
3 years ago
Francisco reads 75 pages every week for a summer reading program I there are about 4 weeks in a month then how many pages ca Fra
natta225 [31]
Answer:

About 300 pages

Explanation:

Week 1: 75 pages
+
Week 2: 75 pages
+
Week 3: 75 pages
+
Week 4: 75 pages
=
About 300 pages in one month
4 0
3 years ago
Convert 491 into binary number
sergij07 [2.7K]

Answer:

111101011 subscript 2

Step-by-step explanation:

491 / 2 = 245 , 1 remainder

245 / 2 = 122 , 1 remainder

122 / 2 = 61 , 0 remainder

61 / 2 = 30 , 1 remainder

30 / 2 = 15 , 0 remainder

15 / 2 = 7 , 1 remainder

7 / 2 = 3 , 1 remainder

3 / 2 = 1 , 1 remainder

1 / 2 = 0 , 1 remainder

Now, we're going to put the remainders together in reverse order to get the final answer.

111101011 ---> this is the final solution

See the image below for how you would write 111101011 subcript 2.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. Scientist B dissolved 20 pounds of salt in 7.0 pints of water
    10·2 answers
  • BRAINLIEST!!<br> 12. How can the figure be cut so that the resulting cross section is a rectangle?
    15·2 answers
  • 0.1/48=x/960 what does x equal?
    6·1 answer
  • The school hall is 4 times as long as it is wide. If the perimeter is 55m, what is the length? and what is the width?
    12·1 answer
  • I need help. This is due today
    13·1 answer
  • What are the x- and y-intercepts of the graph of 3x - 4y = 9?​
    14·1 answer
  • Can someone help me on this problem? Brainliest 5 stars and 15 points
    8·1 answer
  • Harper surveyed 380 of the students in her school about their favorite color. 57 students said their favorite color was red. Wha
    11·1 answer
  • PLEASE HELP! I need this fast!
    14·2 answers
  • Liz is using the distributive property to evaluate the expression 27 (36) by using friendlier numbers. Her work is shown below.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!