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OpenStudy (yacoub1993):
Which of the following graphs represents the relationship described above?
OpenStudy (yacoub1993):
A.
OpenStudy (yacoub1993):
B
OpenStudy (yacoub1993):
C
OpenStudy (yacoub1993):
D
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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
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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
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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.