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Anton [14]
3 years ago
14

1. Subtract -3n2 from -7n2​

Mathematics
1 answer:
Stella [2.4K]3 years ago
6 0

The answer is: -4n^2

Further explanation:

Given

Two terms: -3n^2 and -7n^2

We have to find the subtraction of the given terms.

Subtracting -3n^2 from -7n^2

= -7n^2-(-3n^2)\\=-7n^2+3n^2\\=-4n^2

The answer is: -4n^2

Keywords: Subtraction of polynomials, Operations on polynomials

Learn more about polynomials at:

  • brainly.com/question/1599887
  • brainly.com/question/1616605

#LearnwithBrainly

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What is the arithmetic mean of the following numbers?<br> 1,2, 10, 6, 4,4,6,3,1,4
sp2606 [1]

Answer:

The quadratic mean (rms) of a set of numbers is the square root of the sum of the squares of the numbers divided by the number of terms.











⎷

(

1

)

2

+

(

2

)

2

+

(

10

)

2

+

(

6

)

2

+

(

4

)

2

+

(

4

)

2

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Step-by-step explanation:

One to any power is one.

√

1

+

(

2

)

2

+

(

10

)

2

+

(

6

)

2

+

(

4

)

2

+

(

4

)

2

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

2

to the power of  

2

.

√

1

+

4

+

(

10

)

2

+

(

6

)

2

+

(

4

)

2

+

(

4

)

2

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

10

to the power of  

2

.

√

1

+

4

+

100

+

(

6

)

2

+

(

4

)

2

+

(

4

)

2

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

6

to the power of  

2

.

√

1

+

4

+

100

+

36

+

(

4

)

2

+

(

4

)

2

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

4

to the power of  

2

.

√

1

+

4

+

100

+

36

+

16

+

(

4

)

2

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

4

to the power of  

2

.

√

1

+

4

+

100

+

36

+

16

+

16

+

(

6

)

2

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

6

to the power of  

2

.

√

1

+

4

+

100

+

36

+

16

+

16

+

36

+

(

3

)

2

+

(

1

)

2

+

(

4

)

2

10

Raise  

3

to the power of  

2

.

√

1

+

4

+

100

+

36

+

16

+

16

+

36

+

9

+

(

1

)

2

+

(

4

)

2

10

One to any power is one.

√

1

+

4

+

100

+

36

+

16

+

16

+

36

+

9

+

1

+

(

4

)

2

10

Raise  

4

to the power of  

2

.

√

1

+

4

+

100

+

36

+

16

+

16

+

36

+

9

+

1

+

16

10

Add  

1

and  

4

.

√

5

+

100

+

36

+

16

+

16

+

36

+

9

+

1

+

16

10

Add  

5

and  

100

.

√

105

+

36

+

16

+

16

+

36

+

9

+

1

+

16

10

Add  

105

and  

36

.

√

141

+

16

+

16

+

36

+

9

+

1

+

16

10

Add  

141

and  

16

.

√

157

+

16

+

36

+

9

+

1

+

16

10

Add  

157

and  

16

.

√

173

+

36

+

9

+

1

+

16

10

Add  

173

and  

36

.

√

209

+

9

+

1

+

16

10

Add  

209

and  

9

.

√

218

+

1

+

16

10

Add  

218

and  

1

.

√

219

+

16

10

Add  

219

and  

16

.

√

235

10

Cancel the common factor of  

235

and  

10

.

Tap for fewer steps...

Factor  

5

out of  

235

.

√

5

(

47

)

10

Cancel the common factors.

Tap for fewer steps...

Factor  

5

out of  

10

.

√

5

⋅

47

5

⋅

2

Cancel the common factor.

√

5

⋅

47

5

⋅

2

Rewrite the expression.

√

47

2

Rewrite  

√

47

2

as  

√

47

√

2

.

√

47

√

2

Multiply  

√

47

√

2

by  

√

2

√

2

.

√

47

√

2

⋅

√

2

√

2

Combine and simplify the denominator.

Tap for fewer steps...

Multiply  

√

47

√

2

and  

√

2

√

2

.

√

47

√

2

√

2

√

2

Raise  

√

2

to the power of  

1

.

√

47

√

2

√

2

1

√

2

Raise  

√

2

to the power of  

1

.

√

47

√

2

√

2

1

√

2

1

Use the power rule  

a

m

a

n

=

a

m

+

n

to combine exponents.

√

47

√

2

√

2

1

+

1

Add  

1

and  

1

.

√

47

√

2

√

2

2

Rewrite  

√

2

2

as  

2

.

Tap for fewer steps...

Use  

n

√

a

x

=

a

x

n

to rewrite  

√

2

as  

2

1

2

.

√

47

√

2

(

2

1

2

)

2

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(

a

m

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n

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a

m

n

.

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47

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2

2

1

2

⋅

2

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1

2

and  

2

.

√

47

√

2

2

2

2

Cancel the common factor of  

2

.

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√

47

√

2

2

1

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47

√

2

2

Simplify the numerator.

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Combine using the product rule for radicals.

√

47

⋅

2

2

Multiply  

47

by  

2

.

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94

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The result can be shown in multiple forms.

Exact Form:

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94

2

Decimal Form:

4.84767985

…

4 0
3 years ago
Complete the similarity statement for the two polygons shown.
Gnoma [55]

Answer:

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Step-by-step explanation:

the new image is mirrored and enlarged, so use that info. to find the corresponding sides to triangle ABCD.

4 0
3 years ago
Write the equation of the
Jet001 [13]

Answer:

y = \frac{1}{5} x+3  

Step-by-step explanation:

From the given information, we already know two points the line intersects. It states that the line has a y-intercept of 3. The y-intercept is the point at which the line intersects the y-axis. Thus, the line also intersects (0,3). (Remember that all points on the y-axis have an x-value of 0.) Now we have enough information to write an equation.  

1) Find the slope of the line with the slope formula, m = \frac{y_2-y_1}{x_2-x_1}. Substitute the x and y values of (-5,2) and (0,3) into the formula and solve:

m = \frac{(3)-(2)}{(0)-(-5)} \\m = \frac{3-2}{0+5}\\m = \frac{1}{5}

So, the slope of the line is \frac{1}{5}.

2) Now we can write the equation in slope-intercept form, represented by the formula y = mx + b. Substitute values for m and b in the formula.

The m represents the slope, so substitute \frac{1}{5} for it. The b represents the y-intercept, so substitute 3\\ for it. This gives the following answer and equation in slope-intercept form:  

y = \frac{1}{5} x+3

8 0
3 years ago
Which is the same function as -2x – 3 = y?
Troyanec [42]
A) just exchange the (y) for [f(x)]
5 0
4 years ago
When 4 times a number n is decreased by 3 it's at most 21
ELEN [110]

Answer:

To translate into numbers: 4n - 3 ≤ 21

5 0
4 years ago
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