**Answer:**

please provide the image! would love to help.

**Step-by-step explanation:**

**Answer:**

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**Step-by-step explanation:**

**No**, -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n

**Step-by-step explanation:**

Let us revise the operation of the negative and positive numbers

- (-) + (-) = (-)
- (-) × (-) = (+)
- (-) + (+) = the sign of greatest [(-) if the greatest is (-) or (+) if the greatest is (+)]
- (-) × (+) = (-)
- (-) - (+) = (-)
- (+) - (-) = (+)

∵ The expression is -8 - 2(3 + 2n) + 7n

- Simplify it

∵ 2(3 + 2n) = 2(3) + 2(2n) = 6 + 4n

∴ -8 - 2(3 + 2n) + 7n = -8 - (6 + 4n) + 7n

- Multiply the bracket by (-)

∴ -8 - (6 + 4n) + 7n = -8 - 6 - 4n + 7n

- Add the like terms

∴ -8 - (6 + 4n) + 7n = (-8 - 6) - 4n + 7n

∴ -8 - (6 + 4n) + 7n = -14 + 3n

∴ **-8 - 2(3 + 2n) + 7n is equivalent to -14 + 3n**

∵ -14 + 3n ≠ -30 - 13n

∴ -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n

**No, -8 - 2(3 + 2n) + 7n is not equivalent to -30 - 13n**

**Learn more:**

You can learn more about the directed numbers in brainly.com/question/10364988

#LearnwithBrainly

The answer is A. You multiply each side by (b/2)^2. B is 4. 4 divided by 2 squared is 4. To make it the same equation squared, you factor it to (x+2)^2. You have to also add the (b/2)^2 to 12 so 12+4=16

It is very simple

Firstly you should draw a line from end of the 7cm line perpendicular to the 11cm line

Then you will get a rectangle and a triangle find the area and add them

Area of rectangle will be

(l*b)

=3*7

=21

Then find the area of the triangle like

(1/2)b*h

=(1/2)3*4

=6

The simply add the areas and you can get the answer as 27

Hope it helps : )