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
LUCKY_DIMON [66]
3 years ago
10

A large brine tank containing a solution of salt and water is being diluted with fresh water.

Mathematics
1 answer:
kirza4 [7]3 years ago
6 0

Answer:

41.04 g/L

Step-by-step explanation:

The relationship is modeled by the following function:

S(t) = 500*e^(-0.25*t)

where t is time elapsed after the dilution begins (in hours) and S(t) the concentration of  salt in the tank (in g/L)

Replacing with t = 10

S(t) = 500*e^(-0.25*10)

S(t) = 41.04 g/L

You might be interested in
When both pipes are working together, how long does it take them to fill the tank?
AleksAgata [21]

Well, since 1 tank takes 60 minutes (hour) and the other takes 40 minutes , add those to get 100 minutes . Divide 6000 by 100 to see how long it takes to fill the tank

Answer :60 minutes or an hour

Hope this helps!

3 0
3 years ago
Suppose you want to build a small walkway around your garden so that there is someplace to walk around and work on your vegetabl
wolverine [178]

Answer:

Approximately 3.5 feet - Option B

Step-by-step explanation:

Imagine that you have this walkway around the garden, with dimensions 30 by 20 feet. This walkway has a difference of x feet between it's length, and say the dimension 30 feet. In fact it has a difference of x along both dimensions - on either ends. Therefore, the increases length and width should be 30 + 2x, and 20 + 2x, which is with respect to an increases area of 1,000 square feet.

( 30 + 2x ) * ( 20 + 2x ) = 1000 - Expand "( 30 + 2x ) * ( 20 + 2x )"

600 + 100x + 4x^2 = 1000 - Subtract 1000 on either side, making on side = 0

4x^2 + 100x - 400 = 0 - Take the "quadratic equation formula"  

( Quadratic Equation is as follows ) - x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a},

x=\frac{-100+\sqrt{100^2-4\cdot \:4\left(-400\right)}}{2\cdot \:4}:\quad \frac{5\left(\sqrt{41}-5\right)}{2},

x=\frac{-100-\sqrt{100^2-4\cdot \:4\left(-400\right)}}{2\cdot \:4}:\quad -\frac{5\left(5+\sqrt{41}\right)}{2}

There can't be a negative width of the walkway, hence our solution should be ( in exact terms ) \frac{5\left(\sqrt{41}-5\right)}{2}. The approximated value however is 3.5081...or approximately 3.5 feet.

4 0
3 years ago
In 2015, there were roughly 1x10^6 high school football players and 2x10^3 professional football players in the United States.
melisa1 [442]

Answer:

500.

Step-by-step explanation:

(1 * 10^6) / (2 * 10^3)

= 1/2 * 10^6/10^3

= 0.5 * 10^3

= 5 * 10^2

= 500.

5 0
3 years ago
In the problem 3r=9/10 how do you solve this to find out what r is
aniked [119]
One way to solve this problem is by:
First multiply both sides by 10
30r=9
Now divide by 30
r=0.3 Final Answer
5 0
3 years ago
What is the equation of this graphed line? Enter your answer in the slope-intercept form in the box.
Luda [366]

Answer:

y = 2x + 2

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Jack and Jillian sell apples at a produce stand. Jillian earns $2 for each bag of apples she sells. At the end of the week, Jack
    15·2 answers
  • Which is a unit of measurement for volume? A. m B. m2 C. m3
    14·1 answer
  • How do you find the missing length indicated
    13·1 answer
  • henry had 20 convertibles and 5 trucks in his miniature car collection.After Henry's aunt bought him some more miniature trucks,
    9·2 answers
  • Smart people. Please click here. I attached a pic of the problem
    13·1 answer
  • Find the surface area of each triangular prism. Round to the nearest tenth if necessary.
    5·2 answers
  • Pls help:( this is due by the end of the day!! 16 points!
    6·1 answer
  • What is the vertex of g(x) = 8x2 – 48x + 65?
    7·2 answers
  • Divide.<br><br> −445÷4<br><br><br> ​−115​<br><br> ​​−45<br><br> 45<br><br> ​​115
    7·1 answer
  • Find the explicit of 3xy+x=y-6
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!