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chubhunter [2.5K]
3 years ago
10

An expression is shown below:

Mathematics
2 answers:
olganol [36]3 years ago
7 0

Answer:

An expression is shown below:

10n³− 15n² + 20xn² − 30xn

Part A: Rewrite the expression so the GCF is factored completely. (4 points)

10n³− 15n² + 20xn² − 30xn

2*5*n*n*n-5*3*n*n+2*5*2*x*n*n-2*5*3*x*n

<u>Greatest</u><u> </u><u>common</u><u> </u><u>factor</u><u>=</u><u>5</u><u>*</u><u>n</u><u>=</u><u>5</u><u>n</u>

Part B: Rewrite the expression completely factored. Show the steps of your work.

Solution given;

10n³− 15n² + 20xn² − 30xn

5n(2n²-3n+4xn-6x)

5n(2n²+4xn-3n-6x)

5n(2n(n+2x)-3(n+2x))

<u>5n(n+2x)(2n-3</u>)

lilavasa [31]3 years ago
4 0

Answer:

5n(2n-3)(n+2x)

Step-by-step explanation:

<u>Step 1:   Rewrite the expression so the GCF is factored completely</u>

<u />10n^{3} - 15n^{2} + 20xn^{2} - 30xn

The GCF is 5n so factor it out

5n(2n^{2} - 3n + 4xn - 6x)

<u>Step 2:  Rewrite the expression completely factored</u>

<u />5n(2n^{2} - 3n + 4xn - 6x)

5n(2n(n+2x)-3(n+2x))

5n(2n-3)(n+2x)

Answer:  5n(2n-3)(n+2x)

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The vertices of ∆ABC are A(-2, 2), B(6, 2), and C(0, 8). The perimeter of ∆ABC is units is? What is the area?
11111nata11111 [884]

we have

A(-2, 2),B(6, 2),C(0, 8)

see the attached figure to better understand the problem

we know that

The perimeter of the triangle is equal to

P=AB+BC+AC

and

the area of the triangle is equal to

A=\frac{1}{2}*base *heigth

in this problem

base=AB\\heigth=DC

we know that

The distance between two points is equal to

d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}

Step 1

<u>Find the distance AB</u>

A(-2, 2),B(6, 2)

Substitute the values in the formula

d=\sqrt{(2-2)^{2}+(6+2)^{2}}

d=\sqrt{(0)^{2}+(8)^{2}}

dAB=8\ units

Step 2

<u>Find the distance BC</u>

B(6, 2),C(0, 8)

Substitute the values in the formula

d=\sqrt{(8-2)^{2}+(0-6)^{2}}

d=\sqrt{(6)^{2}+(-6)^{2}}

dBC=6\sqrt{2}\ units

Step 3

<u>Find the distance AC</u>

A(-2, 2),C(0, 8)

Substitute the values in the formula

d=\sqrt{(8-2)^{2}+(0+2)^{2}}

d=\sqrt{(6)^{2}+(2)^{2}}

dAC=2\sqrt{10}\ units

Step 4

<u>Find the distance DC</u>

D(0, 2),C(0, 8)

Substitute the values in the formula

d=\sqrt{(8-2)^{2}+(0-0)^{2}}

d=\sqrt{(6)^{2}+(0)^{2}}

dDC=6\ units

Step 5

<u>Find the perimeter of the triangle</u>

P=AB+BC+AC

substitute the values

P=8\ units+6\sqrt{2}\ units+2\sqrt{10}\ units

P=22.81\ units

therefore

The perimeter of the triangle is equal to 22.81\ units

Step 6

<u>Find the area of the triangle</u>

A=\frac{1}{2}*base *heigth

in this problem

base=AB=8\ units\\heigth=DC=6\ units

substitute the values

A=\frac{1}{2}*8*6

A=24\ units^{2}

therefore

the area of the triangle is 24\ units^{2}

4 0
4 years ago
Read 2 more answers
**WILL MARK BRAINLIEST AND THANK YOU**
Svetach [21]

Answer:

Step-by-step explanation:

D) 221

4 0
4 years ago
What is the slope of the line that passes through the points (-4, 8) and (-14, 8) ?
jasenka [17]

Answer:

Step-by-step explanation:

(8-8)/(-14+4) = 0/-10 = 0 is the slope

4 0
3 years ago
Use 3.14 for PI( π ) <br><br> Diameter: 5 ft <br> Formula: A= πr2
Liula [17]

Answer:

\boxed {\boxed {\sf 19.625 \ ft^2}}

Step-by-step explanation:

The area of a circle is found using this formula:

a= \pi r^2

We know the circle's diameter is 5 feet, but we don't know the radius. Remember the diameter passes through the center from one side to the other, while the radius connects the center and the side. Therefore, the radius is half the diameter.

  • r=d/2
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We know the radius is 2.5 feet and we are using 3.14 for pi. Substitute the values into the formula.

a= (3.14)* (2.5 \ ft)^2

Solve the exponent.

  • (2.5 ft)²= 2.5 ft *2.5 ft=6.25 ft²

a= (3.14)*(6.25 \ ft^2)

Multiply.

a=19.625 \ ft^2

The area of the circle is <u>19.625 square feet.</u>

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3 years ago
8 1/6 - 2 7/8 = <br><br> BRAINLIEST
ivann1987 [24]

Answer:

5 7/24

Step-by-step explanation:

Convert to improper: 49/6-23/8=254/48 which is 5 7/24

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6 0
3 years ago
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