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victus00 [196]
1 year ago
14

Ll

Mathematics
1 answer:
Oliga [24]1 year ago
4 0

Answer:

\Large\boxed{1)~6x+7}

\Large\boxed{2)~-7x+5y+8}

Step-by-step explanation:

<h2>Question 1: 4x + 7 + 2x</h2>

<u>Given expression</u>

4x + 7 + 2x

<u>Move like terms together</u>

= 4x + 2x + 7

= (4x + 2x) + 7

<u>Combine like terms</u>

\Large\boxed{=6x+7}

<h2>Question 2: -4x+3y-3x+8+2y</h2>

<u>Given expression</u>

-4x + 3y - 3x + 8 + 2y

<u>Move like terms together</u>

= -4x - 3x + 3y + 2y + 8

= (-4x - 3x) + (3y + 2y) + 8

<u>Combine like terms</u>

\Large\boxed{=-7x+5y+8}

Hope this helps!! :)

Please let me know if you have any questions

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What is the surface area of a rectangular prism?<br><br>length : 3<br>width : 3<br>height = 5
elixir [45]
Since it is a rectangular prism, the front and back are the same. the sides are the same and the top and bottom are the same. You would find the area of the front and back first. Since they both have the same measurements, you can find the area of one of the faces and multiply by 2.
A=BH
A= 3x5
A=15
15x2=30
So the front and back's area is 30. Now you find the area of both sides. They are both rectangle so the formula is A=BH.
A=BH
A=3x5
A=15
15x2=30
Now you find the area of the top and bottom. It is also a rectangle so you will use the same formula.
A=BH
A=3x3
A=9
9x2=18
Finally, you add all these measurements together adn that is the surface area. 
This surface area of this rectangle prism is 78.
4 0
3 years ago
The equation of a line is -6x-2y=-18<br> What is the x-intercept of the line?
Fed [463]

 -6x - 2y = -18

-6x - 2(0) = -18

   -6x - 0 = -18

        -6x = -18

         -6      -6

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hope this helps :)

8 0
3 years ago
Read 2 more answers
A rectangle has an area of 12 square feet and a length of 5 feet .what the width
gladu [14]
Area= Length* Width
⇒ 12 ft^2= 5 ft* Width
⇒ Width= 12 ft^2/ 5 ft
⇒ Width= 2.4 ft

The width is 2.4 ft~
6 0
3 years ago
Which of the following substances has molecules that are spread the furthest apart?
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Answer:

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2 years ago
Find the number, if 3 1/3 of it is 10
Ugo [173]

Answer:

3

Step-by-step explanation:

You want a number that if it is multiplied by 3 1/3 the result will be 10. Let the number be x

3 1/3 * x = 10                         Change to a mixed number

10/3 * x = 10                          Multiply by 3/10

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x = 10*3 / 10                          Simplify

x = 30/10 = 3

6 0
3 years ago
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