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3 years ago

-2(n+3)+3n please help it’s do in less than 8 hours

Mathematics

1 answer:

saveliy_v [14]3 years ago

6 0

Answer:

n - 6

Step-by-step explanation:

Firsly, break the bracket and you will get:

-2(n+3)+3n

= -2 * n + 3 * (-2) + 3n

= -2n + (-6) + 3n

= -2n + 3n - 6

= n - 6

Hope this helped :3

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A rectangle is removed from a right triangle to create the shaded region shown below. Find the area of the shaded region.

irina [24]

Answer:

I can't tell what the triangle is

Step-by-step explanation:

8 0

3 years ago

Can someone help me with this

mash [69]

The center of the circle is (h,k) = (-2,-3)

The radius of the circle is r = 2

The standard form of equation of the circle is

${(x + 2)}^{2} + {(y + 3)}^{2} = 4$

<h3>How to find the center, radius and standrad form of the circle?</h3>

The general form of equation of the circle is

${(x - h)}^{2} + {(y - k)}^{2} = {r}^{2}$

Here, (h,k) means centre of the circle.

r means radius of the circle.

given that coordinate points of centre of circle is (-2,-3).

Hence the (h,k) = (-2,-3)

<h3>How to find the radius of the circle?</h3>

Now to find the radius of the circle

The distance from a circle's centre to its circumference is its radius.

The distance from a circle's centre (-2,-3) to its circumference (0,-3) is its radius.

using the formula, distance between the two points to obtain radius.

$d = \sqrt{(x1 - x2) {}^{2} + {(y1 - y2)}^{2} } \\ r = \sqrt{ {( - 2 - 0)}^{2} + {( - 3 - ( - 3))}^{2} } \\ r = \sqrt{ {( - 2)}^{2} + {( - 3 + 3)}^{2} } \\ r = \sqrt{ {4}^{2} + 0 } \\ r = \sqrt{4} \\ r = 2$

<h3>How to find the standard form of equation of the circle?</h3>

(h,k) = (-2,-3)

r = 2

subtitue the (h,k) and r values to get the standard form of equation of the circle.

$(x - h) {}^{2} + {(y - k)}^{2} = {r}^{2}$

${(x - ( - 2))}^{2} + {(y - ( - 3))}^{2} = {r}^{2}$

${(x + 2)}^{2} + {(y + 3)}^{2} = 4$

Learn more about circle, refer:

brainly.com/question/24810873

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5 0

2 years ago

Consider the equation and its solution.

AVprozaik [17]

Answer:

The correct answer is C. 2.

Step-by-step explanation:

To solve this problem, we should begin with the second step and work backwards in order to find the unknown value. If given the equation -15x + 30 = 25, we should factor out a -15 to simplify. This method is shown below.

-15x + 30 = 25

-15(x-2) = 25

We know this is correct because if we redistribute the -15 through the parentheses using the distributive property, we would get our original equation again. In other words, this answer is confirmed by the fact that -15 * -2 equals positive 30.

However, we need to look closely at the question that is asked. The box that we must fill in is already preceded by a negative sign, thus the correct answer is C. 2.

We can check our work by replacing the box with the number 2, getting -15(x-2) + 30 = 25, which was the equation we got earlier.

Hope this helps!

5 0

4 years ago

What 2 numbers multiplied = 108 and added = -72

NemiM [27]

First you multiple 6*18=108
Then -108+36=-72

That it
Good luck

5 0

3 years ago

Plz help. i’ll give brainliest

ZanzabumX [31]

Answer:

<em> x=17 degrees</em>

<em>m1=97 degrees</em>

Step-by-step explanation:

6x-19=3x+32(vertically opposite angles)

6x-19-3x=32

3x =32+19

3x=51

<em> x=17 degrees</em>

<em />

when we substitute x in these:

6x-19=83

3x+32=83

if 1=y

83+83+Y+Y=360(points around a point is 360 degrees)

166+2Y =360

2Y =360-166

2Y=194

Y=97

Therefore 1=97 degrees

<em>If you have any answer just ask me </em>

<em>If you think this is the best answer please mark me as brainliest</em>

8 0

3 years ago