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krok68 [10]
3 years ago
6

What is the opposite of 2? :D

Mathematics
2 answers:
Juliette [100K]3 years ago
8 0

Answer:

-2

Step-by-step explanation:

Opposite number or additive inverse of any number (n) is a number which, if added to n, results in 0, the identity element of addition. The opposite number for n is written as −n.

Anna007 [38]3 years ago
6 0

Mathematical key for opposite numbers:

The opposite of a negative number is its positive number.

The opposite of a positive number is its negative number.

Therefore, the opposite of 2 is -2.

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How can you use 4×7 to find 8×7
Natasha_Volkova [10]
If you think about it, 4x7 is half of 8x7 (If you multiply 4, 7, and 2, you get 8x7). So really you can just multiply 4x7 by 2 and you will get 8x7!
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7-18 use part 1 of the fundamental theorem of calculus to find the derivative of the function.
blondinia [14]

\displaystyle h(x)=\int\limits_{1}^{\sqrt{x}}~\cfrac{z^2}{z^4+1}dz~\hspace{10em}\cfrac{dh}{du}\cdot \stackrel{chain~rule}{\cfrac{du}{dx}\implies \cfrac{dh}{dx}} \\\\[-0.35em] ~\dotfill\\\\ u=\sqrt{x}\implies \cfrac{du}{dx}=\cfrac{1}{2\sqrt{x}} \\\\[-0.35em] ~\dotfill

\cfrac{dh}{dx}\implies \displaystyle \cfrac{d}{du}\left[ \int\limits_{1}^{u}~\cfrac{z^2}{z^4+1}dz \right]\cdot \cfrac{1}{2\sqrt{x}}\implies \left[ \cfrac{u^2}{u^4+1} \right]\cdot \cfrac{1}{2\sqrt{x}} \\\\\\ \stackrel{substituting~back}{\left[ \cfrac{(\sqrt{x})^2}{(\sqrt{x})^4+1} \right]\cdot \cfrac{1}{2\sqrt{x}}}\implies \cfrac{x}{x^2+1}\cdot \cfrac{1}{2\sqrt{x}}\implies \cfrac{\sqrt{x}}{2x^2+2}

7 0
1 year ago
The measure of an interior angle of a regular polygon is 174. Find the number of sides in the polygon.
RoseWind [281]

Answer:

6

Step-by-step explanation:

it as a interior angle of a regular polygon is 23

3 0
2 years ago
Kasey has 8 packages of gelatin. She plans to fill molds that each take 113 packages of gelatin.
Ivenika [448]

servings = 6

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8 0
2 years ago
Write an equation in slope-intercept form for the line passing through the pair of points.
damaskus [11]

Answer:

<h2>A) y= -x + 1</h2>

Step-by-step explanation:

The slope-intercept form of an equation of a line<em>:</em>

y=mx+b

<em>m</em><em> - slope</em>

<em>b</em><em> - y-intercept</em>

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

==========================================

We have the points (-1, 2) and (4, -3).

Calculate the slope:

m=\dfrac{-3-2}{4-(-1)}=\dfrac{-5}{5}=-1

Put the value of the slope an the coordinates of the point 9-1, 2) to the equation of a line:

2=(-1)(-1)+b

2=1+b              <em>subtract 1 from both sides</em>

1=b\to b=1

Finally:

y=-x+1

7 0
3 years ago
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