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charle [14.2K]
3 years ago
7

A square has a side length of 2x+5, write an expression to find the perimeter of the square

Mathematics
2 answers:
Naddika [18.5K]3 years ago
6 0

Answer:

4(2x+5) or 8x+20

Step-by-step explanation:

VMariaS [17]3 years ago
4 0

Answer:

8x + 20

Step-by-step explanation:

Side = 2x + 5

Perimeter of square = 4*side

                                 = 4*(2x + 5)          {Use distributive rule:a(b +c) = a*b +a*c}

                                = 4*2x + 4*5

                                = 8x + 20

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A submarine was 20 feet below sea level. If it ascends (goes up) 30 feet,
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Answer:

10 ft above sea level

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6 0
3 years ago
M
Ierofanga [76]

Answer:

see below

Step-by-step explanation:

m/3 + 4 = 7

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4 0
3 years ago
Find the difference of(ab+8a+1)-(-6ab+4)
vagabundo [1.1K]
Hey there!

When finding the difference of expressions like these, there's a few things you should keep in mind. 

1. When finding the difference of two polynomials, multiply the polynomial that implied to be "negative" by –1 to expand the problem and make it easier to solve. 

2. You combine terms based on their unknown terms, like x, y, x², ab, etc. You cannot combine the terms x and x², but you can combine the terms 6b and 8b by adding them. 

3. You can rearrange your terms however you see fit. If a polynomial is implied as "positive", you can multiply that entire polynomial by +1 to get rid of the parentheses. 

With all that in mind, you can go ahead and solve for your difference, like so:

(ab+8a+1)-(-6ab+4)

(ab+8a+1) (-1(-6ab+4))

(ab+8a+1) + (6ab-4)

ab+6ab+8a+1-4

7ab+8a-3

7ab+8a-3 will be your difference. 

Hope this helped you out! :-)
8 0
3 years ago
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