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3 years ago

Help!!! Need done by 6/222019

Mathematics

1 answer:

Bas_tet [7]3 years ago

6 0

Answer:

Its a long way to get to the answer but contact me if you want an explanation...

Step-by-step explanation:

$y(x) = - \frac{1}{8} {x}^{4} + \frac{3}{8} {x}^{3} + {x}^{2} - \frac{3}{2} x - 2$

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You roll a six-sided die twice. What is the probability of rolling a number divisible by 2 and then a number divisible by 3?

elena-s [515]

Answer:

5/6 because you have a 4/12 chance its divisible bye 3. and 6/12 divisible by 2.

4/12+6/12=10/12

10/12=5/6

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3 years ago

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The simplified form of (xm)(xm)(xm)(xm)(xm)(xm)(xm) is

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I'm not sure why options a. and d. are the same, but you would simply count the number of times x and m appear, while being multiplied together, and multiply the product of xm by that number. in this case, the number is 7, so you should get 7(xm) or 7xm.

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4 years ago

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Integrate xe^(-x^2).

Gekata [30.6K]

You can easily integrate it using a simple substitution:

$\large\begin{array}{l} \mathsf{\displaystyle\int\!x\,e^{-x^2}\,dx}\\\\ =\mathsf{\displaystyle\int\!\left(-\frac{1}{2}\right)\cdot (-2)x\,e^{-x^2}\,dx}\\\\ =\mathsf{\displaystyle-\,\frac{1}{2}\int\!\,e^{-x^2}\cdot (-2x)\,dx\qquad\quad(i)}\\\\ \end{array}$

$\large\begin{array}{l} \textsf{Let}\\\\ \mathsf{-x^2=u,}\quad\textsf{then}\quad\mathsf{-2x\,dx=du}\\\\\\ \textsf{so (i) becomes}\\\\ =\mathsf{\displaystyle-\,\frac{1}{2}\int\!e^u\,du}\\\\ =\mathsf{\displaystyle-\,\frac{1}{2}\cdot e^u+C}\\\\ =\mathsf{\displaystyle-\,\frac{1}{2}\cdot e^{-2x}+C}\\\\\\ \boxed{\begin{array}{c} \mathsf{\displaystyle\int\!x\,e^{-x^2}\,dx=-\,\frac{1}{2}\,e^{-x^2}+C} \end{array}}\qquad\checkmark \end{array}$

If you're having problems understanding this answer, try seeing it through your browser: brainly.com/question/2159730

$\large\textsf{I hope it helps. :-)}$

Tags: <em>integrate substitution indefinite integral exponential composite calculus</em>

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4 years ago

Selena and Ronald are planning to get married at the university where they met and graduated. The university charges $2,000 to s

jok3333 [9.3K]

Here, we have to find the number of guests who can attend their weeding without exceeding the set budget of $10,000

Since the catering fee of $150 is waived, we do not consider this figure in our analysis

There is a constant which is the venue costs of $2,000 and a variable cost of $80 per guest for the reception.

Let us assume "X" guests arrive for the reception, so we can form the equation as shown below:

80X + 2,000 = 10,000 (Since the total budget for the wedding is $10,000)

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Therefore, Selena and Ronald can invite 100 guests for the wedding without going over their budget

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3 years ago

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Aria played 2 games and went on 7 rides.

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