The perimeter of a triangle whose sides are of lengths 3x, 3x - 1 and x.
a.7x - 1
b. 5x
c. 9x2 - 3x
d. 6x - 1
Simplify the expression?
2009-01-23 3:04 pm
回答 (5)
2009-01-23 3:08 pm
✔ 最佳答案
perimeter of a scalene triangle is given by a+b+cso u get 7x-1 as the answer.
2009-01-23 3:33 pm
3x + (3x - 1) + x
= 3x + 3x - 1 + x
= 6x - 1 + x
= 6x + x - 1
= 7x - 1
(answer a)
= 3x + 3x - 1 + x
= 6x - 1 + x
= 6x + x - 1
= 7x - 1
(answer a)
2009-01-23 3:21 pm
the perimeter of a triangle is a+b+c
3x+ (3x-1) + x
= 3x + (3x-1) + x.
= 3x + 3x-1 + x.
= 7x - 1.
It is A.
3x+ (3x-1) + x
= 3x + (3x-1) + x.
= 3x + 3x-1 + x.
= 7x - 1.
It is A.
2009-01-23 3:13 pm
a=3x b=3x-1 c=x
P=a+b+c
P=3x+3x-1+x
P=7x-1 answer
answer is A. 7x-1
P=a+b+c
P=3x+3x-1+x
P=7x-1 answer
answer is A. 7x-1
2009-01-23 3:09 pm
To get the perimeter of a triangle, just add the lengths of its sides.
So, perimeter = 3x + (3x-1) + x.
--> perimeter = 3x + 3x-1 + x.
--> perimeter = 7x - 1.
It is A.
:)
So, perimeter = 3x + (3x-1) + x.
--> perimeter = 3x + 3x-1 + x.
--> perimeter = 7x - 1.
It is A.
:)
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