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Mathematics 19 Online
OpenStudy (yacoub1993):

Help me Please

OpenStudy (yacoub1993):

Which of the following graphs represents the relationship described above?

OpenStudy (yacoub1993):

A.

OpenStudy (yacoub1993):

B

OpenStudy (yacoub1993):

C

OpenStudy (yacoub1993):

D

OpenStudy (yacoub1993):

WHICH ONE IS CORRECT?

OpenStudy (yacoub1993):

is B the correct answer

OpenStudy (psymon):

Nope. Actually calculate it. Look at what the perimeter is with 1 rectangle, 2 and then 3. You can find out what the perimeter of each is and then see the pattern.

OpenStudy (yacoub1993):

let me try again wait

OpenStudy (yacoub1993):

it should be d or c

OpenStudy (psymon):

Look at the starting point for c and d. Only one of them starts out at the right spot. Just find the perimeter with 1 rectangle and see where that would line you up on the y-axis.

OpenStudy (yacoub1993):

because the perimeters i got are 28 56 and 84

OpenStudy (psymon):

Youre adding something up wrong then.

OpenStudy (yacoub1993):

the correct starting point is D

OpenStudy (psymon):

But yes, D would be the correct starting point regardless :3

OpenStudy (yacoub1993):

is this the way to calculate a perimeter

OpenStudy (yacoub1993):

for 1 triangle p = 2 x 5 + 2 x 8

OpenStudy (psymon):

Which is 26.

OpenStudy (yacoub1993):

yes but for the second traingle, should i multiply the answer with two to get 2 triangle perimeter

OpenStudy (psymon):

Nope. We need to look at whats actually being added: |dw:1379306783159:dw| For each rectangle, you only really add 10 to the perimeter.

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