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Leno4ka [110]
2 years ago
8

3/8 = r + 2/3 what is R

Mathematics
2 answers:
larisa86 [58]2 years ago
6 0
The answer is -7/24 I believe
Kruka [31]2 years ago
5 0
-7/24, because you can just do this question in reverse to figure out an answer. (3/8 - 2/3)
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The current value of a new car is $18,000. The car will depreciate 15% per year over the next 5 years. Which exponential equatio
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Answer:

f(x) = 18,000 • 0.85^x

Step-by-step explanation:

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How to determine if a equation is a inequality
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Answer: >, <, ≥, ≤

Step-by-step explanation: Any of these are clear indicators of an inequality

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3 years ago
A chemist has one solution that has 50% acid. She has another solution that is 25% acid. How many liters of the 50% acid solutio
Tatiana [17]

Answer:

Step-by-step explanation:

Let's begin by assigning letters to represent our two unknowns:

   x (liters of 25% solution)

   y (liters of 50% solution)

 

Our system of equations will consist of two equations:

   Equation #1 (total volume of solution)

   Equation #2 (total concentration of acid)

 

Our total volume of solution is 10 liters, which can be expressed as the sum of our unknowns:

   Equation #1:  x + y = 10

 

Our total concentration of acid can be expressed as the sum of the individual acid concentrations to make up the concentration of the final solution:

   Equation #2:  (0.25)(x) + (0.50)(y) =

                            (0.40)(10)

 

We can use Equation #1 to express one unknown in terms of the other and then plug that expression into Equation #2 to solve for one of the unknowns:

   x + y = 10

         y = 10 - x

 

Now we'll plug our expression for y in terms of x into Equation #2 and solve for x:

   0.25(x) + 0.50(10 - x) = 0.40(10)

   0.25x + 5 - 0.50x = 4

   -0.25x = 4 - 5

   -0.25x = -1

          x = (-1)/(-0.25)

          x = 4 (liters of 25% solution)

 

Now we'll plug our value for x into Equation #1 and solve for y:

   4 + y = 10

         y  = 10 - 4

         y = 6 (liters of 50% solution)

 

Finally, we will verify the correctness of our answers by plugging these values into Equation #2 to see if the sum of the component acid concentrations equals the final solution concentration:

   0.25(4) + (0.50)(6) = 0.40(10)

   1 + 3 = 4

         4 = 4 (our answers are correct)

8 0
2 years ago
Find the slope of the line
Reil [10]
The slope is negative, so the slope is negative. Using the rise over run formula, the slope of the line should be -1.
7 0
3 years ago
URGENT WILL GIVE BRAINLIEST IF CORRECT!!!!
Snowcat [4.5K]

Answer:

A could represent the volume of a full bottle of the hot sauce.

Step-by-step explanation:

If we say that a full bottle of hot sauce is 100 ml, 90% of that would be 90ml, meaning that <em>x</em> is 90ml.

In this scenario, (10/9)x would equal 100ml, so it has to be the answer.

5 0
3 years ago
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