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DochEvi [55]
2 years ago
6

What is the purpose of rereading a text? Check all that apply.

Mathematics
2 answers:
natta225 [31]2 years ago
6 0
To improve comprehension
navik [9.2K]2 years ago
5 0

Answer:

A, B, D

Step-by-step explanation:

i took the test

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The number of daily sales of a product was found to be given by S = 600xe−x2 + 600 x days after the start of an advertising camp
Elena-2011 [213]

Answer:

a. 20520

b. 12600

Step-by-step explanation:

Given the function S = 600xe^-x² + 600.

a. To find the average, we have to find the definite integral of the function because average, as it is known, is the sum of data points divided by the size of its dataset, this can be used for discrete data. Integral formula is just the continuous form of average, so we are using integral because we were given an interval of x= 0 to X = 30.

Let's integrate 100xe^x² first. Let –x² = u, this means –2xdx = du and we have dx = –du/2x. Also, when x = 0, u = –(0)² = –0 and when x = 30, u = –(30)² = –900. When we make our substitutions we have:

–600(xe^udu)/2x = –600(e^udu)/2 upon integrating that we have –600(e^u)/2. Applying our interval we have

–600[(e^900)/2 – (e^0)/2] ≈ – [– 3.7 – (1/2)] = –600 (–4.2) = 600 x 4.2 = 2520

Now let's integrate 600, with the interval x = 0 to x = 30 (we are using this interval here because the substitution we made didn't affect this).

We have, upon integrating:

600x.

Substituting our intervals we have:

600(30 – 0) = 600 x 30 = 18000.

Adding that up we have: 2520 + 18000 = 20520.

b. The same method is needed, just difference of interval.

Therefore, after integrating the first component with intervals u = 900 to u = 2500 (from x² = u) we have:

–600[(e^2500)/2 – (e^900)/2] ≈ –600[2.7 – 3.7] = –600(–1) = 600.

Then for the second component:

600x using x = 30 to x = 50

600(50 – 30) = 600 x 20 = 12000.

Adding that up we have:

12000 + 600 = 12600.

4 0
2 years ago
During his speech at the Creating Digital Dividends Conference in October 2000, Bill Gates said, "I’m a great believer that any
natali 33 [55]

Answer:

Step-by-step explanation:

If you look at it this way, one can say that algebra does act as a tool to improve communication in the sense that, it is similar, in a way, to learning a new language. You don't rush into it, you start rather gently, little by little, step by step before you can say, you fully get it. We can then agree that this will improve one's communication prowess because the person would be learning something new with the help of some other people.

3 0
3 years ago
The area of a rectangle is 600 m² the width is 30 m what is the length
Angelina_Jolie [31]

Answer:

20m

Step-by-step explanation:

600 divided by 30 = 20

7 0
2 years ago
Please Help, 20 Points !!
Svetllana [295]

Answer:

the value of x is 5 :) lalal

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2 years ago
Given the following sequence, find the 25th term: 0, 1, 2, 3, 4, . . .
Burka [1]
The answer for this question would be 24 because 0 is included.
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3 years ago
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