- anonymous

The perimeter of a rectangle is 64 units. Can the length x of the rectangle can be 20 units when its width y is 11 units?

- chestercat

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- anonymous

please help me guys!

- anonymous

well think what is the formula to find the perimeter?

- anonymous

a+b+c?

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## More answers

- anonymous

?????

- anonymous

P=2(l+w)

- anonymous

i dont remember

- anonymous

so now do the math with the formula

- anonymous

can you give me the answer then we discuss it?

- texaschic101

perimeter of rectangle is : P = 2L + 2W
start subbing in :
P = 64
L = 20
W = 11
if it comes out correct, then it can be a solution
if it comes out incorrect, then it cannot

- anonymous

here are my options

- anonymous

No, the rectangle cannot have x = 20 and y = 11 because x + y ≠ 64
No, the rectangle cannot have x = 20 and y = 11 because x + y ≠ 32
Yes, the rectangle can have x = 20 and y = 11 because x + y is less than 64
Yes, the rectangle can have x = 20 and y = 11 because x + y is less than 32

- anonymous

20+11*2=62

- anonymous

no option has 62 as an answer

- texaschic101

ok...lets sub
P = 2L + 2W
64 = 2(20) + 2(11)
64 = 40 + 22
64 = 62....it cannot be true

- anonymous

the= with a line through it means not = to. get it?

- anonymous

yeah

- anonymous

so whats the final answer from the options?

- anonymous

I would say A

- anonymous

ok thx!!!!

- anonymous

no problem do you need more help?

- texaschic101

It doesn't make much sense....x and y do not have to equal 64.....2x + 2y have to equal 64

- anonymous

so whats the answer? texaschic

- anonymous

yes buttons i could use some more help.

- anonymous

k what do ya need

- texaschic101

I think it is B

- triciaal

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- triciaal

|dw:1444324811828:dw|

- texaschic101

64 = 2x + 2(11)
64 = 2x + 22
64 - 22 = 2x
42 = 2x
21 = x
the width would have to be 21 for this to be true
so I guess it is A

- anonymous

you guess?? thats not to reliable

- triciaal

to match the answer choices
p = 64 = 2(x + y) 32 = x + y
when x = 20 and y = 11 x + y not = 31 so B

- triciaal

correction not = 32 so B

- texaschic101

thanks triciaal.....my mind was going blank....it is B, I see that now....because x + y would not have to equal 64 for it to be true

- anonymous

I agree with triciaal

- anonymous

so its b?

- texaschic101

yes

- anonymous

ya

- triciaal

@texaschic101 welcome
@david821 yes but do you see why?

- anonymous

not really

- texaschic101

x + y has to equal 32 for it to be correct....and if you do 20 + 11...that is 31, so it is not true

- anonymous

its because x+y=31 not 32

- anonymous

k

- triciaal

I need a job as an online tutor so I wouldn't have to leave now.

- anonymous

lol

- anonymous

i need more help on one more quest

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