Answer: The main job is to transport and propel throughout the body so the msot logical answer would be C
Explanation:
C is the correct answer
What is the amount that shareholders contribute
Answer:
Contributed capital is the total value of stock that shareholders have bought directly from the issuing company. It includes the money from initial public offerings (IPOs), direct listings, direct public offerings and secondary offerings ---including issues of preferred stock.
What idea-generating technique allows members to spark each other's imagination through interaction? freewheeling listening role-playing brainstorming
Brainstorming allows members to intentionally develop unconventional or outlandish ideas.
Explanation:
Brainstorming is an idea-generating technique of group creativity, which aims to deduce a specific problem by collecting a list of ideas spontaneously provided by members. It can be used to find possible simple solutions to problems, but it is unrealistic to expect to do most of your troubleshooting or planning tasks.
This approach is useful in making greater efforts when it comes to generating individual information and ideas, as well as the subsequent collection, evaluation and selection of data.
Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. He plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. How many milliliters of the 20% acid solution should Raul use to create the 40% acid solution?
Can someone please explain this to me? I know that the answer is 10 milliliters, but I don't know how to get it.
Answer: 4 = 4 (our answers are correct)
Explanation:et'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
Answer: 20 ml of the substance with 50% of acid and 10ml of the substance with 20% of acid.
Explanation:
Let's define X as the ml of the substance that is 20% acid and Y as the substance that has 50% of acid.
We want to craft a substance that of 30 ml that has a 40% of acid.
where, for example, 20% of the acid in the X ml is 0.2*X ml of acid.
The equations that we have is:
a) X + Y = 30
b) X*0.2 + Y*0.5 = 0.4*30
The first step is isolate one of the variables in one of the equations, lets isolate X in a.
X = 30 - Y
now we can replace it in the equation b, and solve the equation for Y.
X*0.2 + Y*0.5 = 0.4*30
(30 - Y)*0.2 + Y*0.5 = 0.4*30
6 - Y*0.2 + Y*0.5 = 12
Y*(0.5 - 0.2) = 6
Y*0.3 = 6
Y = 6/0.3 = 20
So we must use 20 ml of the substance with 50% of acid, and the other 10 ml must be the substance of 20% of acid.