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4 years ago

This is an equation.

1 answer:

3 0

Let's evaluate left side first.

There are 4 -5's and 5 -3's

So that's 4(-5) + 5(-3) = -35

So now our equation is -35 = -5x

Now divide both sides by -5:

-35 / -5 = x

7 = x

So the missing number would be 7 to make this equation true.

Final answer: 7

Hope this helps.

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Help help help please

kondaur [170]

Answer:

<h2>50°, 60°, 70° (the second answer)</h2>

Step-by-step explanation:

The sum of the angles in a triangle = 180°

We can use the equation:

2x + 80 + 25 - 5x + 6x + 90 = 180

Combine like-terms:

2x + 6x - 5x = 3x

80 + 25 + 90 = 195

195 + 3x = 180

Subtract 195 from both sides:

3x = -15

Divide both sides by -3 to isolate x:

x = -5

Now that you've solved for x, you can replace x with -5 in the equation for each angle.

2(-5) + 80 = 70°

6(-5) + 90 = 60°

25 - 5(-5) = 50°

8 0

3 years ago

Solve this problem <br>may be easy or nt

Phoenix [80]

Answer:

Mark me as brainliest ❤️

3 0

3 years ago

Advice columnist Ann Landers once asked her readers with children to answer the following question: "If you had it to do over ag

ivanzaharov [21]

Answer:

Option D is correct

Step-by-step explanation:

This is true because people who have been emotionally affected by their children are probably more likely to respond than people who are happy with having children that is why it can be seen that we have a high response of "no"

6 0

3 years ago

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>

7 0

4 years ago

PLEASE HELP!!: 600 raffle tickets were sold for $5 each. There is one $500 first prize and three $200 second prizes. The remaind

sveta [45]

Answer:

$4,100

Step-by-step explanation:

600 x $5 = $3000

$3000 + $500 = $3500

$3500 + $200 + $200 + $200 = $4100

Thanks to

27turekkm

3 0

2 years ago