3. 6/3 equals 2 and 9 divided by 3 equals 3, so a simplified expresssion would say (2n^2)-3.
Answer: 28 decibels.
Step-by-step explanation:
1. To solve this exercise you must observe the graph attached in the problem, where the intensity of the sound is represented in the x-axis and the decibel measure is represented in the y-axis.
2. As you can see in the graph, when the value of x is 500 (x=500) the value of y is 28 (y=28).
3. Therefore, the answer is the second option: 28 decibels.
Answer: 1 1/2
You can write this as 1 & 1/2
The whole part is 1. The fractional part is 1/2
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Explanation:
Let's say we had 18 cookies to hand out to 12 students.
How many cookies does each student get?
Using a calculator shows that 18/12 = 1.5 which means they get one whole cookie each
The leftovers is 18-12 = 6
Then notice how 6/12 = 1/2
So that's how the improper fraction 18/12 becomes the mixed number 1 & 1/2
So each student gets 1 full cookie, plus half a cookie.
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Or we could do the problem like this
18/12 = (12+6)/12
18/12 = (12/12)+(6/12)
18/12 = 1 + (1/2)
18/12 = 1 & 1/2
<h3>
Answer:</h3>
29. e = D/(3f²)
30. k=-4, x=41 . . . . matches the 2nd selection
<h3>
Step-by-step explanation:</h3>
29. Multiply by the inverse of the coefficient of e. That coefficient is 3f², so you divide by that quantity.
... D = e(3f²)
... D/(3f²) = e . . . . . matches the first choice
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30. You want to solve for k and use it with a different y-value.
... y = kx
... -96 = k·24
... -96/24 = k = -4
For y = -164, you have
... -164 = -4·x
... -164/-4 = x = 41
The coefficient of variation is -4, x is 41.