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4 years ago

What is 9/41 expressed as a decimal?

Mathematics

2 answers:

Paul [167]4 years ago

8 0

Answer: This person is corrected because I got a A on the test.

Step-by-step explanation:

alina1380 [7]4 years ago

4 0

The answer is D. Hope this helps.

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Eleven purple marbles, seven orange marbles and two pink marbles are in a bag. What is the probability of selecting a purple mar

Mice21 [21]

Answer:

20%

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Use integration by parts to find the integrals in Exercise.<br> x^3 ln x dx.

34kurt

Answer:

$\frac{\text{ln}(x)x^4}{4}-\frac{x^4}{16}+C$ .

Step-by-step explanation:

We have been given an indefinite integral $\int \:x^3\:ln\:x\:dx$ . We are asked to find the value of the integral using integration by parts.

$\int\: u\text{dv}=uv-\int\: v\text{du}$

Let $u=\text{ln}(x)$ , $v'=x^3$ .

Now, we will find du and v as shown below:

$\frac{du}{dx}=\frac{d}{dx}(\text{ln}(x))$

$\frac{du}{dx}=\frac{1}{x}$

$du=\frac{1}{x}dx$

$v=\frac{x^{3+1}}{3+1}=\frac{x^{4}}{4}$

Upon substituting our values in integration by parts formula, we will get:

$\int \:x^3\:\text{ln}\:(x)\:dx=\text{ln}(x)*\frac{x^4}{4}-\int\: \frac{x^4}{4}*\frac{1}{x}dx$

$\int \:x^3\:\text{ln}\:(x)\:dx=\frac{\text{ln}(x)x^4}{4}-\int\: \frac{x^3}{4}dx$

$\int \:x^3\:\text{ln}\:(x)\:dx=\frac{\text{ln}(x)x^4}{4}-\frac{1}{4}\int\: x^3dx$

$\int \:x^3\:\text{ln}\:(x)\:dx=\frac{\text{ln}(x)x^4}{4}-\frac{1}{4}*\frac{x^{3+1}}{3+1}+C$

$\int \:x^3\:\text{ln}\:(x)\:dx=\frac{\text{ln}(x)x^4}{4}-\frac{1}{4}*\frac{x^4}{4}+C$

$\int \:x^3\:\text{ln}\:(x)\:dx=\frac{\text{ln}(x)x^4}{4}-\frac{x^4}{16}+C$

Therefore, our required integral would be $\frac{\text{ln}(x)x^4}{4}-\frac{x^4}{16}+C$ .

5 0

3 years ago

You are using a taxi cab company that charges a flat fee of $5.00 and an additional $0.50 per mile. Let x represent the number o

stepan [7]

Answer:

Equation: y=.50x+5.00

Answer 1: You would have to pay 15.00 dollars total.

Answer 2: 40 miles

Step-by-step explanation:

Answer 1:

The flat fee is 5.00 dollars. plus it's 00.50 cents per mile. So, what's the half of 20? It's 10. So, 10.00 dollars plus 5.00 is $15.00 .

Answer 2:

Okay, so here, you have $25.00. So, you can go ahead and take the 5.00 away cause that's the flat fee. So, we know that you need $10.00 for 20 miles, so if we have $20.00, then that would take you 40 miles.

6 0

4 years ago

What is Mean Absolute Deviation (MAD)? How do I do it? (Please have an example to show.)

masha68 [24]

Explanation:

It is the average (mean) of the absolute values of the differences between a set of numbers and their mean.

Example: consider the set {1, 2, 4}. The mean is computed in the usual way: the sum divided by the number of contributors —

mean = (1 + 2 + 4)/3 = 7/3 = 2 1/3

Then the deviations are ...

1 -2 1/3 = -1 1/3 . . . . the absolute value of this is 1 1/3

2 -2 1/3 = -1/3 . . . . . the absolute value of this is 1/3

4 -2 1/3 = 1 2/3 . . . . the absolute value of this is 1 2/3

The mean of these absolute values is their sum divided by the number of them:

(1 1/3 +1/3 +1 2/3)/3 = (3 1/3)/3 = 1 1/9

The MAD of {1, 2, 4} is 1 1/9.

_____

Your graphing calculator or spreadsheet program may have a function that will calculate this for you.

7 0

3 years ago

Can you please answer this

jasenka [17]

Answer:

Sum angle of triangle BHD = 180°

36 + 39 + BHD = 180

BHD = 180 - 36 - 39

= 105°

BHD + x° = 180° (straight angle)

105° + x° = 180°

x = 180 - 105

= 75°

4 0

3 years ago