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Sedbober [7]
4 years ago
5

Subtract: (3m2 + 2n) – (m2 + 2n)

Mathematics
2 answers:
maksim [4K]4 years ago
8 0
The negative in front of the second bracket means that it's times by -1 so each of their signs switches: 
3m^2+2n-m^2-2n 
Add like terms 
2m^2 
the 2n cancels out 
Lesechka [4]4 years ago
8 0
The answer should be2m^2
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Answer:

1. B) Figure B.

2. C) Figure C.

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Step-by-step explanation:

Given: Radius of Circle A= 4

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           Radius of circle D= 7

Now, finding circumference and area of all the circle.

We know, circumference of circle= 2\pi r

Area of circle= \pi r^{2}

Where, r= radius of circle and π = 3.14

First, solving for figure A

Circumference= 2\times 3.14\times 4= 25.12\ cm

Area= 3.14\times 4^{2} = 50.24\ cm^{2}

Solving for Figure B

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Solving for Figure C

Circumference= 2\times 3.14\times 6= 37.68\ cm

Area= 3.14\times 6^{2} = 113.04\ cm^{2}

Solving for Figure D

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Area= 3.14\times 7^{2} = 153.86\ cm^{2}

∴ 1. Answer is Figure B.

   2. Answer is figure C.

   3. Answer is Figure D

   4. Answer is Figure C.

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