2 years ago

What is the perimeter of the octagon

Mathematics

1 answer:

yuradex [85]2 years ago

3 0

180 is the answer ig lol

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Which statements are true? (look at picture)

Makovka662 [10]

Answer:

D is true, E is true, F is true

Step-by-step explanation:

Hello,

n is an odd number it means that n = 2a+1 where a is integer

$n^2-1=(2a+1)^2-1=4a^2+4a+1-1=4a(a+1)$

this is not an odd number

$n(n-1)=(2a+1)2a$

this is not an odd number

$(n-1)^2=(2a+1-1)^2=4a^2$

this is not an odd number

$n^2+2=(2a+1)^2+2=4a^2+4a+1+2=4a^2+4a+3= 2(2a^2+2a+1)+1$

so this is an odd number

$n(n-2)=(2a+1)(2a-1)=4a^2-1=4a^2-2+1=2(2a^2-1)+1$

so this is an odd number

$(n-2)^2=(2a+1-2)^2=(2a-1)^2=4a^2-4a+1 = 2(2a^2-2a)+1$

this is an odd number

hope this helps

7 0

2 years ago

Martin has 38 dollars.raymond had x fewer dollars than Martin . Choose the expression that shows how much money Raymond has

horsena [70]

Answer: x < 38

Step-by-step explanation: Raymond has less money than Martin but you don’t know how much. So you use the less than sign to show that it’s less than 38 dollars

6 0

2 years ago

Can you please explain how I got it wrong and how to get it right (thx)

olga55 [171]

U should have subtract 180 and 131

6 0

2 years ago

Please help me! Thanks in advance...

adell [148]

Density of water won't change.

and u should not keep it on the table as it cant support its weight which is

w= density*volume = 62*(3*3*3) =1674 lb which is way greater than 200 lb

3 0

3 years ago

How many questions need to be answered correctly to receive a score of 80%?dhow your work

dangina [55]

It depends on how many questions there are

6 0

3 years ago