Two substance useful because of their viscosity
1 answer:
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When the price is at $42 per keyboard, there is a surplus in the market. At $42, there is a surplus of 300 units of keyboards in the market. The pressure is downward. When demand is low, there is a pressure for the prices to be reduced.
<h3>What is the market situation at $18?</h3>At $18, there is a shortage of 200 keyboards. The pressure is upwards. Basic demand and supply indicates that when the demand is above the equilibrium point, the pressure for price to increase is high.
It is to be noted that the equilibrium point is the basis for the above rationalization. The equilibrium point is the price-point at which demand equals supply.
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Full Question:
The following graph shows the monthly demand and supply curves in the market for keyboards.
A) Use the graph input tool to help you answer the following questions. Enter an amount into the Price field to see the quantity demanded and quantity supplied at that price.
B) The equilibrium price in this market is ________ per keyboard, and the equilibrium quantity is ____________ keyboards bought and sold per month.
Complete the following table by indicating at each price whether there is a shortage or surplus in the market, the amount of that shortage or surplus, and whether this places upward or downward pressure on prices.
Also see the attached image.
The number of seats in the stadium that were filled for the game is equal to 49,406 seats.
- Let the filled seats be F.
- Let the empty seats be E.
<u>Given the following data:</u>
- Stadium capacity = 70,580.
- Ratio of F to E = 7:3
- Total ratio= 7 + 3 = 10
To determine the number of seats in the stadium that were filled for the game:
Mathematically, the number of filled seats in the stadium is given by this expression:
F = 49,406 seats.
Read more on ratio here: brainly.com/question/13513438
<h3>Answer:</h3>
60 days
<h3>Explanation:</h3>Half-life is the amount of time it takes half of a substance to decay away.
Guess and Check
One method for solving half-life problems like this is to guess and check. To do this, we can continue to divide 475mg by 2 until we get to 30mg.
- 475 ÷ 2 = 237.5
- 237.5 ÷ 2 = 118.75
- 118.75 ÷ 2 = 59.375
- 59.375 ÷ 2 = 29.6875
As seen here, it takes approximately 4 half-lives for this sample of Ra-225 to decay to 30mg. Now, we can multiply 4 by the length of the half-life, 15 days.
- 4 * 15 = 60 days.
Fractions
Another way to solve this is to use fractions.
- 30 is about 1/16 of 475
- 16 is equivalent to
.
This means that it takes 4 half-lives for 475mg to decay to 30mg. Using the same method above, we can tell that 4 half-lives are 60 days.
Important Note
In this question, I rounded occasionally. So, not all of the values are exact, but they are all very close.